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| August 31 | ||
|---|---|---|
 UGK | Crysis, Hate, JuJu, and ProMR leave. | |
| August 31 (approx.) | ||
 NexT | BooM, Bryz, Flushing, Nodish, Rakzyy, and Stun3x leave. | |
| August 29 | ||
 TOR | Methodz becomes restricted free agent. | |
 INF | Dato, Gohan, Keyotk, KiNg, Krozin, and Titto leave. | |
  Ottawa Uni. Black   St. Edward's Uni. Blue in the eFuse College CoD Summer Open 2021. | ||
| gb messaging SRK in the GameBattles $500 4v4 Saturday Showdown 2021-08-29. | ||
 BearClaw Gaming  Render Esports Black in the Scrims Esports Back 2 School LAN 2021. | ||
 Shady Kings  Theory Nation in the AGN North Carolina 2021. | ||
 Jinete Gaming  Los Tutis in the Five Star Esports 2021 Season 2. | ||
 NY | Diamondcon leaves. | |
 Zygnus Esports  SKADE in the Call of Duty Mobile World Championship 2021 LA Finals. | ||
 LDN | Alexx, PaulEhx, Seany, Zed, and ShAnE (Coach) leave. | |
 LAG.A | Cheen, Exceed, Maux, Nero, and Bevils (Head Coach) leave. | |
| LAG | Apathy, Assault, MentaL, SiLLY, and Cheen leave. | |
 Voltage eSport Oracle Esport in the Helios x Wander Gaming Cup 2 2021. | ||
 SCARZ and Zygnus Esports qualify for the Call of Duty Mobile World Championship 2021. | ||
SCARZ  VrilliantOwlX in the Call of Duty Mobile World Championship 2021 JP Finals. | ||
| August 28 | ||
 Full House Gaming and SKADE qualify for the Call of Duty Mobile World Championship 2021. | ||
| LoydClever RafiGrad in the GameBattles EU $500 2v2 Saturday Showdown 2021-08-28. | ||
| Boogaooga :) in the GameBattles $1000 4v4 Saturday Showdown 2021-08-28. | ||
 LAT | TJHaLy leaves. | |
 CHI | FormaL retires. | |
| CHI | Envoy leaves. | |
| August 27 | ||
 RWR | Team signs roster of  Imperial Gaming. Fakepozo, Farao, Glda7, Gus, Musik, and zeloco join. | |
 IMP | Roster is signed by  RWR E-Sports. Fakepozo, Farao, Glda7, Gus, Musik, and zeloco leave. | |
 O34 | Team signs roster of  SIXTH SENSE6. Aramis, Benja, ElbueNacho, Jorgitooo, Laww, and MatiL join. | |
 SS6 | Roster is signed by  Operation 34. Aramis, Benja, ElbueNacho, Jorgitooo, Laww, and MatiL leave. | |
 DAL | C6 and Vivid become restricted free agents. | |
 PAR | AquA, Skrapz, Temp, and Zaptius leave. | |
 BK | Team signs roster of æ·«. DoNoMoDs, Fakepozo, Flacko, Glda7, Gus, and zeloco join. | |
 æ·« | Roster is signed by  Black Knights. Idaunko, KUROKAWAIZANA, OsiriXas, Tacoooos, TDKantoXas, and Yattin leave. | |
| August 26 | ||
 NWU | Radial joins. | |
 NYSL Mayhem Explicit in the Mobile Mayhem Summer 2021 NA Playoffs. | ||
 DOG$ | Ninnja, Sheed, Soldier, and ZeroMyGoodness leave. | |
 BKR | Team signs roster of  Cold Esports. Denza, Jim, Kosh, Lidiaigss, and Sav join. | |
 COLD | Roster is signed by Cold Esports. Denza, Jim, Kosh, Litgiaigss, and Sav leave. | |
| August 25 (approx.) | ||
 STMN | Tobi retires. | |
| August 25 | ||
 4LF4 | Dylan, Kraven, and SanTy leave. | |
 KCP | Slacked (Content Creator) joins. | |
 VrT | JHustleR retires. | |
 RF | Nuker joins. Martino leaves. | |
| VrT | Nuker leaves. | |
 SZ | Nimble (Coach) leaves. | |
 BP | Cllyne leaves. | |
| August 24 | ||
 Maycam Evolve  Royal Frog in the ArenaOn Série A 2021 Season 3 Playoffs. | ||
 HTM | camallenn (Analyst) leaves. | |
| uTC | 7omm1 (Coach) leaves. | |
 MV3 | Vikul leaves. | |
 OXG | Leader leaves. | |
| NY | Revan (Coach) leaves. | |
 F/A | Loony retires. | |
 TaL | Pajson (Coach) and Roper (Coach) leave. | |
 WaR | Magxck (Coach) and Synical (Analyst) leave. | |
 VOLT | Lynz joins. Abuzah leaves. | |
| August 23 | ||
 CAN | Veohz (Coach) leaves. | |
 BBG | Pentagrxm leaves. | |
| TaL | Vortex leaves. | |
| August 22 | ||
| BBG | GodRx and KiSMET leave. | |
| XY x Hueligan SRK in the UMG Gaming $800 Prime 2v2 S&D 2021-08-22. | ||
| JoseRancho SuperShlimey in the GameBattles $500 2v2 Saturday Showdown 2021-08-22. | ||
| aBeZy is awarded the Call of Duty League Championship 2021 MVP. | ||
 Atlanta FaZe  Toronto Ultra in the Call of Duty League Championship 2021. | ||
 Tempus Gaming  Ocean Gaming White in the Infinity League Championship 2021. | ||
 Void Esports  Unknown Gaming in the Costarican League 2021 Season 2 Playoffs. | ||
| Vanguard Beta starts on September 10. | ||
| Vanguard Multiplayer reveal will take place on September 7. | ||
| Vanguard Alpha starts on August 27. | ||
 Revenant Esports qualifies for the Call of Duty Mobile World Championship 2021. | ||
 Insidious Esports  Team Vitality in the Call of Duty Mobile World Championship 2021 SAME Finals. | ||
 Crackheads  RSG in the Garena Malaysia Summer Championship 2021. | ||
| August 21 | ||
| Insidious Esports and Team Vitality qualify for the Call of Duty Mobile World Championship 2021. | ||
| HueliGoated Boruto Fans in the GameBattles $1000 2v2 Saturday Showdown 2021-08-21. | ||
| LC- SnakeeCOD in the GameBattles EU $500 2v2 Saturday Showdown 2021-08-21. | ||
| Dashy, Insight, Simp, and aBeZy are selected as the SCUF Team of the Year. | ||
 B8 | FKiNg leaves. | |
| August 20 | ||
| Simp is awarded the Call of Duty League 2021 Regular Season MVP. | ||
 SEA | Classic, Gunless, Octane, Prestinni, Loony, and Nubzy (Head Coach) leave. | |
| Undefeated is disqualified from Mobile Champs 2021 SAME Finals and replaced by Team NS. | ||
| August 19 | ||
 AA | 2ReaL, Infamous, MRuiz, and Zyyral leave. | |
| August 17 | ||
| INF | Krozin joins. | |
 WDC.F | Ambition, BlackJr, Cheek, Dolphin, Guitar, and TheKiss join. | |
| Team SuperEvan Team Savyultras90 in the RØKKR Royale 3. | ||
| August 16 | ||
 iNCO | R4F4 joins. | |
 GOD | Hawkz joins. | |
| INF | Hawkz leaves. | |
| August 15 (approx.) | ||
 REND | Dasson, POWInfinity, Spidaa, and Whyeat leave. | |
| August 15 | ||
 ANAR | SlayeR leaves. | |
 UYU | Noysii, Wand, and Wellyy leave. | |
| Shady Kings BearClaw Gaming in the Aviddity x EBeasty Dallas LAN 2021. | ||
| Yermskeez OnyxColsonBowers in the GameBattles $500 2v2 Saturday Showdown 2021-08-15. | ||
 Shorys Gaming CaribbeanR in the Blink Esports LATAM North Championship 2021. | ||
 ALMGHTY  Gaijin Rogue in the Garena Singapore Summer Championship 2021. | ||
| August 14 (approx.) | ||
 CR | Depaa and Nadox leave. | |
| August 14 | ||
| Volute SRK in the UMG Gaming $800 Prime 2v2 S&D 2021-08-14. | ||
| SRK FUFA in the GameBattles $1000 2v2 Saturday Showdown 2021-08-14. | ||
| yokes tokes Upthereds in the GameBattles EU $500 2v2 Saturday Showdown 2021-08-14. | ||
| August 13 | ||
 GigaHub Los Pollos in the Pro Esports League 2021 Masters Division Season 2 Playoffs. | ||
| August 12 | ||
 IMP | Shadow and Syafiq join. | |
| NY | Clayster moves to starting roster. Diamondcon moves to substitute. | |
| August 10 | ||
| NY | SenseiSwishem (Content Creator) joins. | |
| VOLT | Abuzah, Breszy, D3L1V3R, and Hosterz join. | |
 ZETA | Team signs roster of  Libalent Vertex. GenGar, Inaba, Sitimentyo, and xAxSy join. | |
 LV | Roster is signed by  ZETA DIVISION. GenGar, Inaba, Sitimentyo, and xAxSy leave. | |
| August 9 (approx.) | ||
 eRa | Darksived, Flick, Risky, and Wisdom leave. | |
 SLiK | Glory, Nightmare, Pure, and Ryza leave. | |
 FLD | Charm, Flames, LittleFoot, and TTinyy leave. | |
 LAGr | Colinnator, Gwinn, Hitmxn, and Vzqkss leave. | |
 DTO1M | Bink, Groovy, Kyzer, and LlamaGod leave. | |
| LAT | Venom returns from loan to EastR. | |
 ATL | Sib returns from loan to EastR. | |
 EstR | GRVTY, Jurd, Fenix (Coach), Denz (Assistant Coach), MadCat (Assistant Coach), Mystvc (Analyst), and Pottsea (Analyst) leave. Sib's loan from ATL FaZe ends. Venom's loan from LA Thieves ends. | |
 3G | Aroma, Detain, Niall, and Watson leave. | |
| August 9 | ||
 CW | Bighead, Buzz, Dak, and Gusify leave. | |
| ANAR | SlayeR joins. | |
 UG | 47, Estreal, Proto, Zinx, and Gunna (Coach) leave. | |
 FE | Restalling, Setzyy, Swifty, and Zepa leave. | |
 AML | Beans, Callum, Chaaxter, Piero, and Clipcal (Analyst) leave. | |
| Spratt & Fifakill LEGIQN & UnRationaL in the BoomTV Cracked Creator Series Finals. | ||
| CODM World Championship 2021 Regional Finals will take place from August 21 to September 19. | ||
| August 8 | ||
We Are Trying Now  Built by Gamers in the Call of Duty Challengers 2021 North American Finals. | ||
 PEPE | envdiaN, Fussion, Torress, and Wailers leave. | |
 The Atlas Lions  Amelia Strays in the Call of Duty Challengers 2021 European Finals. | ||
 Renegades  Vertex Gaming in the Call of Duty Challengers 2021 Asia Pacific Finals. | ||
| August 7 | ||
| MV3 | Vikul moves from Europe to North America. | |
 TRGK | Team signs roster of Team Energy. Genius, Gnev, HezzZ, Ragox, Rondo, and Plim (Coach) join. | |
| ENER | Roster is signed by  Tragik Esports. Genius, Gnev, HezzZ, Ragox, Rondo, and Plim (Coach) leave. | |
| RafiGrad Red Box in the GameBattles EU $500 2v2 Saturday Showdown 2021-08-07. | ||
| SnDTourneyzz JoseRancho in the GameBattles $1000 2v2 Saturday Showdown 2021-08-07. | ||
| August 6 | ||
 SK | Brack, Fire, Gunsiii, Hamza, and DawsonVoid (Coach) leave. | |
| 4LF4 | Kraven joins. Strict leaves. | |
| August 4 (approx.) | ||
 ZYG | Juust joins. | |
| August 4 | ||
| Team Jukeyz Team Jukeyz in the World Series of Warzone Season 1 EU Trios. | ||
| eRa | Darksived, Flick, Risky, and Wisdom join. | |
 CA | Bafundo, Careful, JDemption, and Quahser join. | |
| August 3 | ||
| UGK | Crysis, Hate, JuJu, and ProMR join. | |
 TN | Decimate, ElectricAim, Striker, and Tyrannicide join. | |
 BTG | CHaTTr, Jett, and Stride join. | |
| DTO1M | Bink, Groovy, Kyzer, and LlamaGod join. | |
| LAGr | Colinnator, Gwinn, Hitmxn, and Vzqkss join. | |
| FLD | Charm, Flames, LittleFoot, and TTinyy join. | |
 OMG | Team signs roster of  NRX Jeremiah 29:11. 6ix9ine, CRUSH, iDra, Jayzee, KenDy, Woopiiee, and Dev1ce (Coach) join. | |
 NRX | Roster is signed by  Omega Esports. CRUSH, iDra, Jayzee, KenDy, Warren, Woopiiee, Khenji, and Dev1ce (Coach) leave. | |
| Korea will not participate in the Call of Duty Mobile World Championship 2021. | ||
| August 2 | ||
| Spratt & Fifakill BlessedMMA & ScummN in the BoomTV Cracked Creator Series Qualifier #3. | ||
| REND | Dasson, POWInfinity, Spidaa, and Whyeat join. | |
| AA | 2ReaL, Infamous, MRuiz, and Zyyral join. | |
| August 1 | ||
 LORE | Parasite, Perform, Ramby, Yeez, and Faded (Coach) leave. | |
 OBT | Ali leaves. | |
| CW | Bighead, Buzz, Dak, and Gusify join. | |
| SLiK | Glory, Nightmare, Pure, and Ryza join. | |
| Standy is awarded the Call of Duty League 2021 - Stage 5 Player of the Stage. | ||
 Minnesota RØKKR Toronto Ultra in the Call of Duty League 2021 - Stage 5 Major. | ||
 Nova Esports  STMN Esports in the Nova Championship Series Season 8. | ||
Team Vitality  3rB Squad in the Call of Duty Mobile World Championship 2021 SAME Qualifier. | ||
| August 1 (approx.) | ||
 OCU | Rayy joins. | |
 UEP | Eiji, F1ex, JaBen, Tin, Yato, and Yobabs join. | |
 SMOG | Infinit, KyleIsGross, Thresh, and Vitaah leave. | |
 CRAK | Bingo, Concept, Jasmine, Sciia, Smokii, and Zhengyu join. | |