Editing Tournament:Mainstage 2021

{{ArticleIcons|ssbm=y|ssbu=y|competitive=y}}
{{Infobox Tournament
|name = Mainstage 2021
|image = Mainstage 2021.png
|dates = November 12th-14th, 2021
|venue = Ontario Convention Center
|address = 2000 E Convention Center Way
|city = Ontario, California {{Flag|USA}}
|attendance = 1,330
|pot = TBD
|ssbmwinner = {{Sm|Wizzrobe|USA}} <small>1v1</small><br>{{Sm|S2J|USA}} & {{Sm|Shroomed|USA}} <small>2v2</small>
|ssbuwinner = {{Sm|MkLeo|Mexico}} <small>1v1</small><br>{{Sm|ESAM|USA}} & {{Sm|MVD|USA}} <small>2v2</small>
|organizer = {{Team|Beyond the Summit}}
}}
'''Mainstage 2021''' was a ''[[Super Smash Bros. Ultimate]]'' [[List of national tournaments|supermajor]] and ''[[Super Smash Bros. Melee]]'' major held in Ontario, California, from November 12th-14th, 2021. It was Beyond the Summit's second ''Smash'' tournament outside of the [[Tournament:Smash Summit (series)|Smash Summit]] tournament series. The top 6 non-invited players for ''Melee'' and ''Ultimate'' qualified for {{Trn|Smash Summit 12}} and {{Trn|Smash Ultimate Summit 4}}, respectively. The tournament also ran a ''{{s|wikipedia|Nickelodeon All-Star Brawl}}'' singles bracket.<ref>{{cite web|url=https://twitter.com/BTSsmash/status/1442608597821636609|title=NASB announced}}</ref> The tournament had the largest attendance of a SoCal ''Super Smash Bros.'' tournament, beating {{Trn|Red Bull Smash Gods and Gatekeepers}}.

A ''[[Project+]]'' event was planned, but was cancelled following Nintendo's takedown of {{Trn|Riptide}}'s ''Project+'' event.<ref>{{cite web|url=https://twitter.com/BTSsmash/status/1433172072545521665?s=19|title=Project+ cancelled}}</ref>

==Results==
===''[[Super Smash Bros. Melee]]'' singles===
(559 entrants)<br>
[https://smash.gg/tournament/mainstage-2021/event/melee-singles/brackets/1018341/1619224 Top 64 Bracket 1]<br>
[https://smash.gg/tournament/mainstage-2021/event/melee-singles/brackets/1018341/1603576 Top 64 Bracket 2]<br>
[https://smash.gg/tournament/mainstage-2021/event/melee-singles/brackets/1018342/1603577 Top 16 Bracket]
{|class="wikitable" style="text-align:center"
!Place!!Name!!Character(s)!!Earnings
|-
|1st||{{Sm|Wizzrobe|USA}}||{{Head|Captain Falcon|g=SSBM|s=16px}}||
|-
|2nd||{{Sm|Hungrybox|USA}}||{{Head|Jigglypuff|g=SSBM|s=16px}}||
|-
|3rd||{{Sm|KoDoRiN|USA}}||{{Head|Marth|g=SSBM|s=16px}}||
|-
|4th||{{Sm|SFAT|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|5th||{{Sm|Ginger|USA}}||{{Head|Falco|g=SSBM|s=16px}}||
|-
|5th||{{Sm|iBDW|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|7th||{{Sm|S2J|USA}}||{{Head|Captain Falcon|g=SSBM|s=16px}}||
|-
|7th||{{Sm|Axe|USA}}||{{Head|Pikachu|g=SSBM|s=16px}}||
|-
|9th||{{Sm|Albert|USA}}||{{Head|Falco|g=SSBM|s=16px}}||
|-
|9th||{{Sm|Lucky|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|9th||{{Sm|Medz|USA}}||{{Head|Marth|g=SSBM|s=16px}}||
|-
|9th||{{Sm|Zealot|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|13th||{{Sm|Magi|USA}}||{{Head|Falco|g=SSBM|s=16px}}||
|-
|13th||{{Sm|SluG|USA}}||{{Head|Ice Climbers|g=SSBM|s=16px}}||
|-
|13th||{{Sm|FatGoku|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|13th||{{Sm|Faceroll|USA}}||{{Head|Sheik|g=SSBM|s=16px}}||
|-
|17th||{{Sm|n0ne|Canada}}||{{Head|Captain Falcon|g=SSBM|s=16px}}{{Head|Ganondorf|g=SSBM|s=16px}}||
|-
|17th||{{Sm|Smashdaddy|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|17th||{{Sm|Gahtzu|USA}}||{{Head|Captain Falcon|g=SSBM|s=16px}}||
|-
|17th||{{Sm|SDJ|USA}}||{{Head|Jigglypuff|g=SSBM|s=16px}}||
|-
|17th||{{Sm|Fiction|USA}}||{{Head|Falco|g=SSBM|s=16px}}||
|-
|17th||{{Sm|Eddy Mexico|Mexico}}||{{Head|Luigi|g=SSBM|s=16px}}||
|-
|17th||{{Sm|Jflex|USA}}||{{Head|Sheik|g=SSBM|s=16px}}||
|-
|17th||{{Sm|Dacky|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|25th||{{Sm|Drephen|USA}}||{{Head|Sheik|g=SSBM|s=16px}}||
|-
|25th||{{Sm|Far!|Mexico}}||{{Head|Sheik|g=SSBM|s=16px}}||
|-
|25th||{{Sm|null|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|25th||{{Sm|Ringler|USA}}||{{Head|Donkey Kong|g=SSBM|s=16px}}||
|-
|25th||{{Sm|KJH|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|25th||{{Sm|Kalamazhu|USA}}||{{Head|Peach|g=SSBM|s=16px}}||
|-
|25th||{{Sm|Rocky|USA|p=California}}||{{Head|Falco|g=SSBM|s=16px}}||
|-
|25th||{{Sm|Franz|USA}}||{{Head|Dr. Mario|g=SSBM|s=16px}}||
|-
|33rd||{{Sm|Aura|USA}}||{{Head|Peach|g=SSBM|s=16px}}||
|-
|33rd||{{Sm|Panda|USA|p=Florida}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|33rd||{{Sm|Fizz|p=Colorado|USA}}||{{Head|Sheik|g=SSBM|s=16px}}||
|-
|33rd||{{Sm|OkayP.|USA}}||{{Head|Pikachu|g=SSBM|s=16px}}||
|-
|33rd||{{Sm|Skerzo|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|33rd||{{Sm|Raz|USA}}||{{Head|Marth|g=SSBM|s=16px}}||
|-
|33rd||{{Sm|Zamu|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|33rd||{{Sm|Logos|USA|p=Utah}}||{{Head|Falco|g=SSBM|s=16px}}||
|-
|33rd||{{Sm|SFOP|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|33rd||{{Sm|Raikin|Chile}}||{{Head|Sheik|g=SSBM|s=16px}}||
|-
|33rd||{{Sm|Krudo|USA}}||{{Head|Sheik|g=SSBM|s=16px}}||
|-
|33rd||{{Sm|Bladewise|USA}}||{{Head|Peach|g=SSBM|s=16px}}||
|-
|33rd||{{Sm|Casper|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|33rd||{{Sm|Mot$|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|33rd||{{Sm|Preeminent|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|33rd||{{Sm|Android 0|USA}}||{{Head|Captain Falcon|g=SSBM|s=16px}}||
|}

===''[[Super Smash Bros. Melee]]'' doubles===
(102 teams)<br>
[https://smash.gg/tournament/mainstage-2021/event/melee-doubles/brackets/1018349/1603635 Top 32 Bracket]<br>
[https://smash.gg/tournament/mainstage-2021/event/melee-doubles/brackets/1028178/1617596 Top 8 Bracket]
{|class="wikitable" style="text-align:center"
!Place!!Name!!Character(s)!!Name!!Character(s)!!Earnings
|-
|1st||{{Sm|S2J|USA}}||{{Head|Captain Falcon|g=SSBM|s=16px}}||{{Sm|Shroomed|USA}}||{{Head|Sheik|g=SSBM|s=16px}}||
|-
|2nd||{{Sm|iBDW|USA}}||{{Head|Fox|g=SSBM|s=16px}}||{{Sm|Fiction|USA}}||{{Head|Falco|g=SSBM|s=16px}}||
|-
|3rd||{{Sm|bobby big ballz|USA}}||{{Head|Falco|g=SSBM|s=16px}}||{{Sm|SFOP|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|4th||{{Sm|Gahtzu|USA}}||{{Head|Captain Falcon|g=SSBM|s=16px}}||{{Sm|Wizzrobe|USA}}||{{Head|Captain Falcon|g=SSBM|s=16px}}||
|-
|5th||{{Sm|FatGoku|USA}}||{{Head|Fox|g=SSBM|s=16px}}||{{Sm|Ginger|USA}}||{{Head|Falco|g=SSBM|s=16px}}||
|-
|5th||{{Sm|Rocky|USA}}||{{Head|Falco|g=SSBM|s=16px}}||{{Sm|Azel|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|7th||{{Sm|Zealot|USA}}||{{Head|Fox|g=SSBM|s=16px}}||{{Sm|Jflex|USA}}||{{Head|Sheik|g=SSBM|s=16px}}||
|-
|7th||{{Sm|Medz|USA}}||{{Head|Fox|g=SSBM|s=16px}}||{{Sm|Axe|USA}}||{{Head|Pikachu|g=SSBM|s=16px}}||
|-
|9th||{{Sm|Drephen|USA}}||{{Head|Sheik|g=SSBM|s=16px}}||{{Sm|Eddy Mexico|Mexico}}||{{Head|Luigi|g=SSBM|s=16px}}||
|-
|9th||{{Sm|Conman|USA}}||{{Head|Fox|g=SSBM|s=16px}}||{{Sm|Webwipe|Canada}}||{{Head|Jigglypuff|g=SSBM|s=16px}}||
|-
|9th||{{Sm|Nut|USA}}||{{Head|Sheik|g=SSBM|s=16px}}||{{Sm|Vavez|USA}}||{{Head|Peach|g=SSBM|s=16px}}||
|-
|9th||{{Sm|salami|USA}}||{{Head|Fox|g=SSBM|s=16px}}||{{Sm|Zamu|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|13th||{{Sm|Umarth|USA}}||{{Head|Marth|g=SSBM|s=16px}}||{{Sm|Kevbot|USA}}||{{Head|Fox|g=SSBM|s=16px}}||
|-
|13th||{{Sm|Chango|USA}}||{{Head|Jigglypuff|g=SSBM|s=16px}}||{{Sm|Far!|Mexico}}||{{Head|Sheik|g=SSBM|s=16px}}{{Head|Falco|g=SSBM|s=16px}}||
|-
|13th||{{Sm|Faceroll|USA}}||{{Head|Sheik|g=SSBM|s=16px}}||{{Sm|YungWaff|USA}}||{{Head|Falco|g=SSBM|s=16px}}||
|-
|13th||{{Sm|Crim|USA}}||{{Head|Fox|g=SSBM|s=16px}}||{{Sm|Wevans|USA}}||{{Head|Samus|g=SSBM|s=16px}}||
|}

===''[[Super Smash Bros. Ultimate]]'' singles===
(830 entrants)<br>
[https://smash.gg/tournament/mainstage-2021/event/ultimate-singles/brackets/1028046/1617383 Top 64 Bracket 1]<br>
[https://smash.gg/tournament/mainstage-2021/event/ultimate-singles/brackets/1028046/1617340 Top 64 Bracket 2]<br>
[https://smash.gg/tournament/mainstage-2021/event/ultimate-singles/brackets/1028047/1617341 Top 16 Bracket]
{|class="wikitable" style="text-align:center"
!Place!!Name!!Character(s)!!Earnings
|-
|1st||{{Sm|MkLeo|Mexico}}||{{Head|Byleth|g=SSBU|s=16px}}||
|-
|2nd||{{Sm|Sparg0|Mexico}}||{{Head|PyraMythra|g=SSBU|s=16px}}{{Head|Cloud|g=SSBU|s=16px}}||
|-
|3rd||{{Sm|Elegant|USA}}||{{Head|Luigi|g=SSBU|s=16px}}||
|-
|4th||{{Sm|Tea|Japan}}||{{Head|Pac-Man|g=SSBU|s=16px}}||
|-
|5th||{{Sm|Chag|Mexico}}||{{Head|Palutena|g=SSBU|s=16px}}||
|-
|5th||{{Sm|Tweek|USA}}||{{Head|Diddy Kong|g=SSBU|s=16px}}||
|-
|7th||{{Sm|Light|USA|p=Connecticut}}||{{Head|Fox|g=SSBU|s=16px}}||
|-
|7th||{{Sm|Dabuz|USA}}||{{Head|Olimar|g=SSBU|s=16px}}{{Head|Rosalina & Luma|g=SSBU|s=16px}}{{Head|Min Min|g=SSBU|s=16px}}||
|-
|9th||{{Sm|Lui$|USA}}||{{Head|Palutena|g=SSBU|s=16px}}||
|-
|9th||{{Sm|Glutonny|France}}||{{Head|Wario|g=SSBU|s=16px}}||
|-
|9th||{{Sm|MuteAce|USA}}||{{Head|Peach|g=SSBU|s=16px}}{{Head|Palutena|g=SSBU|s=16px}}||
|-
|9th||{{Sm|Kola|USA}}||{{Head|Roy|g=SSBU|s=16px}}||
|-
|13th||{{Sm|Maister|Mexico}}||{{Head|Mr. Game & Watch|g=SSBU|s=16px}}||
|-
|13th||{{Sm|Cosmos|USA}}||{{Head|PyraMythra|g=SSBU|s=16px}}||
|-
|13th||{{Sm|naitosharp|USA}}||{{Head|Zero Suit Samus|g=SSBU|s=16px}}{{Head|Joker|g=SSBU|s=16px}}||
|-
|13th||{{Sm|ESAM|USA}}||{{Head|Pikachu|g=SSBU|s=16px}}||
|-
|17th||{{Sm|moxi|USA}}||{{Head|Pokemon Trainer|g=SSBU|s=16px}}||
|-
|17th||{{Sm|Lima|USA}}||{{Head|Bayonetta|g=SSBU|s=16px}}||
|-
|17th||{{Sm|NAKAT|USA}}||{{Head|Sora|g=SSBU|s=16px}}{{Head|Pichu|g=SSBU|s=16px}}{{Head|Joker|g=SSBU|s=16px}}||
|-
|17th||{{Sm|Marss|USA}}||{{Head|Zero Suit Samus|g=SSBU|s=16px}}||
|-
|17th||{{Sm|MVD|USA}}||{{Head|Snake|g=SSBU|s=16px}}||
|-
|17th||{{Sm|Kurama|USA}}||{{Head|Mario|g=SSBU|s=16px}}||
|-
|17th||{{Sm|Skyjay|Mexico}}||{{Head|Incineroar|g=SSBU|s=16px}}||
|-
|17th||{{Sm|AC|USA}}||{{Head|Snake|g=SSBU|s=16px}}||
|-
|25th||{{Sm|Stroder Ame|USA}}||{{Head|Sora|g=SSBU|s=16px}}{{Head|Greninja|g=SSBU|s=16px}}{{Head|Mario|g=SSBU|s=16px}}{{Head|Roy|g=SSBU|s=16px}}||
|-
|25th||{{Sm|Quidd|USA}}||{{Head|Pokemon Trainer|g=SSBU|s=16px}}{{Head|Steve|g=SSBU|s=16px}}||
|-
|25th||{{Sm|Riddles|Canada}}||{{Head|Terry|g=SSBU|s=16px}}||
|-
|25th||{{Sm|Chase|USA}}||{{Head|Palutena|g=SSBU|s=16px}}||
|-
|25th||{{Sm|Peabnut|USA}}||{{Head|Mega Man|g=SSBU|s=16px}}||
|-
|25th||{{Sm|Big D|Canada}}||{{Head|Ice Climbers|g=SSBU|s=16px}}||
|-
|25th||{{Sm|TonyZTank|USA}}||{{Head|Sonic|g=SSBU|s=16px}}||
|-
|25th||{{Sm|Jakal|USA}}||{{Head|Wolf|g=SSBU|s=16px}}||
|-
|33rd||{{Sm|T3 DOM|USA}}||{{Head|Richter|g=SSBU|s=16px}}{{Head|Simon|g=SSBU|s=16px}}||
|-
|33rd||{{Sm|ShinyMark|Guatemala}}||{{Head|Pikachu|g=SSBU|s=16px}}||
|-
|33rd||{{Sm|LingLing|USA}}||{{Head|Daisy|g=SSBU|s=16px}}||
|-
|33rd||{{Sm|Kobe|USA}}||{{Head|Young Link|g=SSBU|s=16px}}||
|-
|33rd||{{Sm|varun|USA}}||{{Head|Wii Fit Trainer|g=SSBU|s=16px}}||
|-
|33rd||{{Sm|Machu|Canada}}||{{Head|R.O.B.|g=SSBU|s=16px}}||
|-
|33rd||{{Sm|Osiris|USA}}||{{Head|Snake|g=SSBU|s=16px}}||
|-
|33rd||{{Sm|BassMage|USA}}||{{Head|Jigglypuff|g=SSBU|s=16px}}||
|-
|33rd||{{Sm|Larry Lurr|USA}}||{{Head|Wolf|g=SSBU|s=16px}}||
|-
|33rd||{{Sm|Jake|USA}}||{{Head|Steve|g=SSBU|s=16px}}||
|-
|33rd||{{Sm|WaDi|USA}}||{{Head|Mewtwo|g=SSBU|s=16px}}||
|-
|33rd||{{Sm|Yez|USA}}||{{Head|Ike|g=SSBU|s=16px}}||
|-
|33rd||{{Sm|VoiD|USA}}||{{Head|Sheik|g=SSBU|s=16px}}||
|-
|33rd||{{Sm|Zinoto|USA}}||{{Head|Diddy Kong|g=SSBU|s=16px}}||
|-
|33rd||{{Sm|Fatality|USA}}||{{Head|Captain Falcon|g=SSBU|s=16px}}||
|-
|33rd||{{Sm|Ned|USA}}||{{Head|Sephiroth|g=SSBU|s=16px}}||
|-
|49th||{{Sm|Captain L|Canada}}||{{Head|Sheik|g=SSBU|s=16px}}||
|-
|49th||{{Sm|Cless|USA}}||{{Head|Terry|g=SSBU|s=16px}}||
|-
|49th||{{Sm|VaLoR|USA}}||{{Head|Sonic|g=SSBU|s=16px}}||
|-
|49th||{{Sm|yonni|USA}}||{{Head|Steve|g=SSBU|s=16px}}||
|-
|49th||{{Sm|Uncivil ninja|USA}}||{{Head|Shulk|g=SSBU|s=16px}}||
|-
|49th||{{Sm|Goblin|USA}}||{{Head|Roy|g=SSBU|s=16px}}||
|-
|49th||{{Sm|Javi|Mexico}}||{{Head|Wolf|g=SSBU|s=16px}}{{Head|Lucina|g=SSBU|s=16px}}||
|-
|49th||{{Sm|Myles|USA}}||{{Head|Yoshi|g=SSBU|s=16px}}||
|-
|49th||{{Sm|Ty|USA}}||{{Head|Zelda|g=SSBU|s=16px}}{{Head|Steve|g=SSBU|s=16px}}||
|-
|49th||{{Sm|Razo|USA}}||{{Head|Peach|g=SSBU|s=16px}}||
|-
|49th||{{Sm|pokepen|USA}}||{{Head|Joker|g=SSBU|s=16px}}{{Head|Sephiroth|g=SSBU|s=16px}}||
|-
|49th||{{Sm|Klaatu|USA}}||{{Head|Olimar|g=SSBU|s=16px}}||
|-
|49th||{{Sm|Peanut|USA}}||{{Head|Little Mac|g=SSBU|s=16px}}||
|-
|49th||{{Sm|BigBoss|Mexico}}||{{Head|R.O.B.|g=SSBU|s=16px}}||
|-
|49th||{{Sm|MinMain|USA}}||{{Head|Sora|g=SSBU|s=16px}}{{Head|Min Min|g=SSBU|s=16px}}||
|-
|49th||{{Sm|Mugen|USA}}||{{Head|Roy|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Marvelous_Marco|USA}}||{{Head|Toon Link|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Shaveh|USA}}||{{Head|Kazuya|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Sticccy|USA}}||{{Head|Fox|g=SSBU|s=16px}}||
|-
|65th||{{Sm|ChillyChilli|USA}}||{{Head|Mario|g=SSBU|s=16px}}||
|-
|65th||{{Sm|AoS|USA}}||{{Head|Zero Suit Samus|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Tux|USA}}||{{Head|Luigi|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Peckham|USA}}||{{Head|Min Min|g=SSBU|s=16px}}||
|-
|65th||{{Sm|YellowRello|USA}}||{{Head|Yoshi|g=SSBU|s=16px}}||
|-
|65th||{{Sm|IceKnight|USA}}||{{Head|Greninja|g=SSBU|s=16px}}||
|-
|65th||{{Sm|ven|USA}}||{{Head|Zelda|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Vermillion|USA}}||{{Head|Lucina|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Lemmon|Canada}}||{{Head|Joker|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Kreeg|USA}}||{{Head|Marth|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Guts|USA}}||{{Head|Ike|g=SSBU|s=16px}}||
|-
|65th||{{Sm|frawg|USA}}||{{Head|Bayonetta|g=SSBU|s=16px}}||
|-
|65th||{{Sm|JoJoDaHoBo|USA}}||{{Head|Toon Link|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Swamp|USA}}||{{Head|King Dedede|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Tohru|USA}}||{{Head|Palutena|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Deathspade|USA}}||{{Head|Bayonetta|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Scend|USA}}||{{Head|Ness|g=SSBU|s=16px}}||
|-
|65th||{{Sm|YMCA|USA}}||{{Head|Donkey Kong|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Debo|USA}}||{{Head|Ness|g=SSBU|s=16px}}||
|-
|65th||{{Sm|White Nova|USA}}||{{Head|Palutena|g=SSBU|s=16px}}||
|-
|65th||{{Sm|SKITTLES!!|USA}}||{{Head|Young Link|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Ludo|USA}}||{{Head|Mario|g=SSBU|s=16px}}||
|-
|65th*||{{Sm|Miya|USA|p=SoCal}}||{{Head|Hero|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Cyber|USA}}||{{Head|Olimar|g=SSBU|s=16px}}||
|-
|65th||{{Sm|H4DS|USA}}||{{Head|Pikachu|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Kyros|USA}}||{{Head|Young Link|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Ronnichu|USA}}||{{Head|Snake|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Grayson|USA}}||{{Head|R.O.B.|g=SSBU|s=16px}}||
|-
|65th||{{Sm|Tyranks|USA}}||{{Head|Lucina|g=SSBU|s=16px}}||
|}
<nowiki>*</nowiki>DQ'd in losers.

===''[[Super Smash Bros. Ultimate]]'' doubles===
(143 teams)<br>
[https://smash.gg/tournament/mainstage-2021/event/ultimate-doubles/brackets/1028048/1617343 Top 32 Bracket]<br>
[https://smash.gg/tournament/mainstage-2021/event/ultimate-doubles/brackets/1028179/1617601 Top 8 Bracket]
{|class="wikitable" style="text-align:center"
!Place!!Name!!Character(s)!!Name!!Character(s)!!Earnings
|-
|1st||{{Sm|ESAM|USA}}||{{Head|Pikachu|g=SSBU|s=16px}}||{{Sm|MVD|USA}}||{{Head|Snake|g=SSBU|s=16px}}||
|-
|2nd||{{Sm|Light|USA|p=Connecticut}}||{{Head|Fox|g=SSBU|s=16px}}||{{Sm|Marss|USA}}||{{Head|Zero Suit Samus|g=SSBU|s=16px}}||
|-
|3rd||{{Sm|Chag|Mexico}}||{{Head|Palutena|g=SSBU|s=16px}}||{{Sm|Sparg0|Mexico}}||{{Head|Cloud|g=SSBU|s=16px}}||
|-
|4th||{{Sm|varun|USA}}||{{head|Wii Fit Trainer|g=SSBU|s=16px}}||{{Sm|Kurama|USA}}||{{head|Mario|g=SSBU|s=16px}}||
|-
|5th||{{Sm|Myles|USA}}||{{head|Yoshi|g=SSBU|s=16px}}||{{Sm|Elegant|USA}}||{{head|Luigi|g=SSBU|s=16px}}||
|-
|5th||{{Sm|MkLeo|Mexico}}||{{head|Byleth|g=SSBU|s=16px}}{{head|PyraMythra|g=SSBU|s=16px}}||{{Sm|Javi|Mexico}}||{{head|Lucina|g=SSBU|s=16px}}{{head|Cloud|g=SSBU|s=16px}}||
|-
|7th||{{Sm|Lui$|USA}}||{{head|Palutena|g=SSBU|s=16px}}||{{Sm|Scend|USA}}||{{head|Ness|g=SSBU|s=16px}}||
|-
|7th||{{Sm|BassMage|USA}}||{{head|Jigglypuff|g=SSBU|s=16px}}||{{Sm|Quidd|USA}}||{{head|Pokémon Trainer|g=SSBU|s=16px}}||
|-
|9th||{{Sm|Chase|USA}}||{{head|Palutena|g=SSBU|s=16px}}||{{Sm|LingLing|USA}}||{{head|Daisy|g=SSBU|s=16px}}||
|-
|9th||{{Sm|Skyjay|Mexico}}||{{head|Incineroar|g=SSBU|s=16px}}||{{Sm|White Nova|USA}}||{{head|Ganondorf|g=SSBU|s=16px}}||
|-
|9th||{{Sm|YellowRello|USA}}||{{head|Yoshi|g=SSBU|s=16px}}||{{Sm|Wii Twerk Trainer|USA}}||{{head|Wii Fit Trainer|g=SSBU|s=16px}}||
|-
|9th||{{Sm|Mugen|USA}}||{{head|Roy|g=SSBU|s=16px}}||{{Sm|Kola|USA}}||{{head|Roy|g=SSBU|s=16px}}||
|-
|13th||{{Sm|Stain|USA}}||{{head|Donkey Kong|g=SSBU|s=16px}}||{{Sm|Spike|USA}}||{{head|Roy|g=SSBU|s=16px}}||
|-
|13th||{{Sm|NoTag|USA}}||{{head|Mario|g=SSBU|s=16px}}||{{Sm|BacoN|USA}}||{{head|Dr. Mario|g=SSBU|s=16px}}||
|-
|13th||{{Sm|Larry Lurr|USA}}||{{head|Wolf|g=SSBU|s=16px}}||{{Sm|Razo|USA}}||{{head|Peach|g=SSBU|s=16px}}||
|-
|13th||{{Sm|Myran|USA}}||{{head|Olimar|g=SSBU|s=16px}}||{{Sm|Uncivil ninja|USA}}||{{head|Shulk|g=SSBU|s=16px}}||
|-
|17th||{{Sm|Aaron|USA|p=Florida}}||{{head|Diddy Kong|g=SSBU|s=16px}}||{{Sm|Goblin|USA}}||{{head|Roy|g=SSBU|s=16px}}||
|-
|17th||{{Sm|Riddles|Canada}}||{{Head|Terry|g=SSBU|s=16px}}{{head|Kazuya|g=SSBU|s=16px}}||{{Sm|Tea|Japan}}||{{Head|Pac-Man|g=SSBU|s=16px}}{{head|Kazuya|g=SSBU|s=16px}}||
|-
|17th||{{Sm|Tyranks|USA}}||{{head|Lucina|g=SSBU|s=16px}}||{{Sm|Dragneel|USA}}||{{head|Lucina|g=SSBU|s=16px}}||
|-
|17th||{{Sm|Kobe|USA}}||{{head|Young Link|g=SSBU|s=16px}}||{{Sm|Phuzix|USA}}||{{head|Sheik|g=SSBU|s=16px}}||
|-
|17th||{{Sm|SpeedyBlueDude|USA}}||{{head|Lucina|g=SSBU|s=16px}}{{head|Pichu|g=SSBU|s=16px}}||{{Sm|Player 0|USA}}||{{head|Lucina|g=SSBU|s=16px}}||
|-
|17th||{{Sm|TM4|USA}}||{{head|Ness|g=SSBU|s=16px}}||{{Sm|Debo|USA}}||{{head|Ness|g=SSBU|s=16px}}||
|-
|17th||{{Sm|Splash Daddy|USA}}||{{head|Bowser|g=SSBU|s=16px}}||{{Sm|VaLoR|USA}}||{{head|Sonic|g=SSBU|s=16px}}||
|-
|17th||{{Sm|AC|USA}}||{{head|Snake|g=SSBU|s=16px}}||{{Sm|twerkmastr|Mexico}}||{{head|Mr. Game & Watch|g=SSBU|s=16px}}||
|}

==Trivia==
*{{Sm|Charliedaking}} was going to Mainstage 2021, but due to a car crash,<ref>{{cite web|url=https://twitter.com/CharlieHaruno/status/1459793539320082434?s=20|title=Charliedaking's car crash}}</ref> he was unable to attend and was DQ'd.
*The two players who were in Grand Finals (MkLeo and Sparg0) were the same ones in {{Trn|Port Priority 6}} 2 weeks prior.

==References==
{{reflist}}

==External links==
*[https://smash.gg/tournament/mainstage-2021/details Smash.gg page]
*[https://www.youtube.com/watch?v=m_ErYeO4178&feature=emb_title Announcement Trailer]

[[Category:2021 tournaments]]
[[Category:Major tournaments (SSBM)]]
[[Category:Supermajor tournaments (SSBU)]]
[[Category:Southern California tournaments]]
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