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| January 31 | ||
|---|---|---|
  Qing Jiu Club   Dynamite Gaming in the Mission Start Invitational 2021. | ||
 Renegades  Chiefs Esports Club in the Call of Duty Challengers 2021 Cup #5 Asia Pacific. | ||
 RAMS  Obtained Esports in the Call of Duty Challengers 2021 Cup #5 Europe. | ||
 Subliners Academy  uT Crew in the Call of Duty Challengers 2021 Cup #5 North America. | ||
 BDS | rizK retires. | |
| BDS | ZaaQ retires. | |
| BDS | Depaa, Natshay, YuuzL, and Zeeked leave. | |
 MV3 | Hyzzn joins. Ninjaso leaves. | |
| January 30 | ||
 VRTX | Pazy joins. ShurKy leaves. | |
 OBT B | VriZix and Zeeked join. | |
 CR | VriZix leaves. | |
 RAMS | Nacho (Coach) joins. | |
 GB | Loki and Nxsus join. | |
 UYU | Charullz, Nightmare, Pure, and Ryza join. | |
| January 30 (approx.) | ||
| CR | Lynz joins. | |
| January 29 (approx.) | ||
 GANG | Henry joins. Chain leaves. | |
| January 29 | ||
 uTC | Jintroid and Yeez join. | |
 100T | Team is sponsored by OMEN. | |
 LAT | Team is sponsored by OMEN. | |
| Team Rated Team ZooMaa in the NAMELESS $10,000 Boomer Bash. | ||
 Projekt Evil  Arial Arise in the AGN Foundation League: Season 4 Playoffs. | ||
| January 28 | ||
| Aydan & Rated Newbz & Intechs in the BoomTV Code Red 2021-01-28. | ||
| January 27 | ||
 TGP | RebuLL joins. RoGGeR leaves. | |
 RF | Bielzinho, EliTz, Krevz, Scarz, and KBR (Coach) join. | |
| January 26 | ||
 KC | head4death joins. | |
 SNG | GunRace, head4death, InSanity, Miney, and SlayeR leave. | |
 NY A | Spart joins. | |
 eMpt | Sukry and Toro (Coach) join. | |
| eMpt | MethodZ retires. | |
 SRP | C1 joins. | |
| January 25 | ||
| Shady Kings Gold Shady Kings Platinum in the Cheetowunga Lord of the Lowtiers 2021-01-24. | ||
 XSET | Frozone (Streamer) joins. | |
| January 24 | ||
| Full Call of Duty League regular season schedule announced. | ||
| Call of Duty Challengers total prize pool announced to be $ 1,130,000. | ||
 Mav3ricks Gaming Club qualifies for EEG Semi-Pro League 2021 Season 1. | ||
 GodLike Esports  Heroes Official in the India Cup 2021 Open. | ||
| January 23 | ||
| Synes qualifies for EEG Semi-Pro League 2021 Season 1. | ||
 Libalent Vertex  CYCLOPS athlete gaming in the Rush Battle Tournament. | ||
| January 22 | ||
 FLA | Neptune moves to starting roster. Havok moves to substitute. | |
 LDN | Afro joins as substitute. | |
 ATVI | NAMELESS (Analyst), Chance (Caster), Miles Ross (Caster), and Lottie Van-Praag (Host) will remain with the team. | |
 LG | WarsZ (Streamer) joins. | |
| NY | Asim joins. HyDra moves to substitute. | |
 EXG | Biso, Diixblo, Sharhy, and Sysma join. | |
 MKS | Diixblo leaves. | |
| January 21 | ||
| FLA | Team is sponsored by MOUNTAIN. | |
 Clutch Rayn Esport qualifies for EEG Semi-Pro League 2021 Season 1. | ||
| Team UnRationaL Team America in the Doritos Bowl 2020. | ||
 HYXR | Proto and Xotic join. Spoof and Stamino leave. | |
| NY | Diamondcon joins from academy roster. | |
| NY A | Diamondcon leaves for main roster. | |
| January 20 | ||
 NL | Kimwax leaves. | |
| UYU | Infamous, Tisch, and Zyyral leave. | |
 NFIN | Cells, Hollow, Jintroid, and Ryza leave. | |
buTwerkJohnOld  LAG Academy in the CheckMate Gaming Elite $800 4v4 S&D 2021-01-20. | ||
 FunPlus Phoenix  QG in the DouYu Winter Grand Prix 2021. | ||
| January 20 (approx.) | ||
 AZT | Runner leaves. | |
 SWN | Breszy, Moose, and QwiKeR leave. | |
| January 19 | ||
 Mkers qualifies for EEG Semi-Pro League 2021 Season 1. | ||
 DAL | FeLo joins as substitute. | |
| Call of Duty League 2021 prizing announced to be $ 5,000,000. | ||
| NY | ZooMaa retires and becomes a content creator. | |
 AK | DreaMz joins. | |
 4LF4 | SanTy retires. | |
| January 18 (approx.) | ||
 KCP | Destiny joins. Nova leaves. | |
| January 18 | ||
 ATL | Sibilants returns from loan to uT Crew. | |
| uTC | Jimbo leaves. Sibilants' loan from ATL FaZe ends. | |
| MKS | Piero joins. | |
We Love you Moch  Depth Esports in the CODAgent $550 4v4 Variant 2021-01-18. | ||
 Team dGeneration WestR Team in the Cheetowunga Lord of the Lowtiers 2021-01-17. | ||
 6GBR | Bielzinho, EliTz, Krevz, Scarz, and KBR (Coach) leave. | |
 DOG$ | FaKeZ joins. | |
| SLAM | Insight is loaned from TOR Ultra. Mochila leaves. | |
 TOR | Insight is loaned to Slammed. | |
| January 17 | ||
 SKDE | JoKeR, LeozZera, Linbz, MTS, Pabzera, and Palitao join. | |
| Call of Duty Challengers Cups 5, 6, 7, and 8 announced. | ||
 WestR Subliners Academy in the Call of Duty Challengers 2021 Cup #4 North America. | ||
 House Tarth Connect 4 in the Call of Duty Challengers 2021 Cup #4 Europe. | ||
 Team Elevate  Aphelion Esports in the Singularity Cup 2021. | ||
 Team Summertime The Bloodline in the GameBattles Fall Ladder 2020 NA Playoffs. | ||
| Banana eSports I Turned on Wuskin in the GameBattles Fall Ladder 2020 EU Playoffs. | ||
Renegades  VOID in the Call of Duty Challengers 2021 Cup #4 Asia Pacific. | ||
AT | CYCLOPS athlete gaming  Rush Gaming in the Another Tournament BOCW Winter. | |
| UYU | Infamous, Tisch, and Zyyral become restricted free agents. Archivs leaves. | |
| GB | PraaX and Taaqz join. | |
| OBT B | PraaX and Taaqz leave. | |
| GANG | Pottsea (Analyst) joins. | |
| January 16 | ||
RAMS,  Team Singularity, and Obtained Esports are invited to EEG Semi-Pro League 2021 Season 1. | ||
 WstR | Jung (Social/Content Manager) joins. | |
 RVNS | Divvxll joins. | |
 dGen | Wand and Whiz join. Cruze, Mind, and Faded (Coach) rejoin. | |
| HYXR | Stamino rejoins. | |
| GANG | HyDra is loaned from NY Subliners. Wardy leaves. | |
| NY | HyDra is loaned to GANGSTERZ. | |
| January 15 | ||
| Team Tommey Team Rated in the London Royal Ravens Warzone Ravenstorm. | ||
 VRTX | JamesJHR, ManOfChicken, Middoh, and Osprey join. | |
 7e | Blitz, Nostalgy, Realize, and Relays join. | |
 NK | Doty joins. | |
| January 15 (approx.) | ||
 DVT | Smokii joins. | |
| January 14 | ||
| NL | Fish joins. | |
| DOG$ | Walker leaves. | |
| Recrent & Ubica Angelika & Lenun in the Twitch Rivals Warzone Season 7 Showdown. | ||
| January 13 | ||
 SEA | Nubzy (Head Coach) is added to the official roster as substitute. | |
 PAR | Theory (Coach) is added to the official roster as substitute. | |
 MIN | Saintt (Head Coach) is added to the official roster as substitute. | |
 Team eMpted is invited to EEG Semi-Pro League 2021 Season 1. | ||
| LAT | Team is sponsored by AT&T | |
| 100T | Team is sponsored by AT&T | |
| January 12 | ||
| CDL 2021 Stage 1 will begin on February 11. | ||
| CDL Kickoff Classic will celebrate the one-year anniversary of the CDL on January 23-24. | ||
 SIC | Jon Farrell (Analyst) and Newbz (Streamer) leave. | |
| SIC | Organization ends operations. | |
 NOVA | PerisH and Tectonic join. | |
 TM | Aerith, Godzly, LittleB, Noah, and Vague join. | |
 TRB | Aflows, Cyzu, Jezz, Slothy, and Iak (Manager) join. Clout, Leon, LittleB, Nero, and Tectonic leave. | |
| HYXR | Stamino leaves. | |
 UG | Oog leaves. | |
 PRLM | Rush retires. | |
| NL | Slothy leaves. | |
| January 12 (approx.) | ||
| PRLM | ElectricAim, Striker, and Tyrannicide leave. | |
| January 11 (approx.) | ||
 HT | Weeman joins. Peatie leaves. | |
| CONN | Felon joins. Weeman leaves. | |
| January 11 | ||
| Taking a Fudge Prestige Worldwide in the Cheetowunga Lord of the Lowtiers 2021-01-10. | ||
| NY A | Prolute joins. | |
| January 10 | ||
 Maycam Evolve  Sixth Gear BR in the ArenaOn BTS Invitational 2021. | ||
| WestR uT Crew in the Call of Duty Challengers 2021 Cup #3 North America. | ||
| Obtained Esports Team eMpted in the Call of Duty Challengers 2021 Cup #3 Europe. | ||
| Chiefs Esports Club VOID in the Call of Duty Challengers 2021 Cup #3 Asia Pacific. | ||
| WstR | Jrosi (Graphic Designer) and SpazzRL (Graphic Designer) join. | |
| WstR | Spark (Social/Content Manager) joins. | |
| FLA | Neptune joins as substitute. | |
| January 10 (approx.) | ||
 FLu | JHaZe, Magik, ReeKuu, and Stuntron leave. | |
| January 9 | ||
| VRTX | Paaqz joins. Peazed leaves. | |
| KCP | Anthrax joins. | |
| WstR | gursh (Social Media Manager) joins. | |
| dGen | Bink, Cruze, Infinit, Mind, and Faded (Coach) leave. | |
| UG | Este retires. | |
 F/A | JRezzy retires. | |
 AA | Rodrsteven (Coach) joins. Crysis, Hate, JuJu, and Welly rejoin. | |
| OBT B | PraaX and Taaqz join. | |
| GB | PraaX leaves. | |
| January 8 | ||
 RSG | Smokii leaves. | |
 MLK | Soldier leaves. | |
| NFIN | Ryza joins. | |
 VOID | Restalling joins. ManOfChicken leaves. | |
| HighGiraffe4267 Neooooo in the CheckMate Gaming Winter Brawl $1000 2v2 S&D 2021-01-08. | ||
| January 7 | ||
| UG | SlowakinZ (Coach) joins. | |
| Call of Duty League Ruleset v1.1 is released. | ||
| January 6 | ||
 RC | Asponz (Analyst) joins. | |
| January 5 (approx.) | ||
| SWN | Breszy joins. | |
| January 4 | ||
| RVNS |  RVNS Esports rebrands as RVNS Esports. | |
| FLA | Team is sponsored by ASUS ROG. | |
| January 3 (approx.) | ||
 INF | KiNg joins. Menod leaves. | |
| January 3 | ||
| UYU | Archivs joins. Super leaves. | |
| Arial Arise Team dGeneration in the Cheetowunga Lord of the Lowtiers 2021-01-02. | ||
uT Crew  3Kingz Gaming in the AfterDark eSports Point Break 2021. | ||
| F/A | Blazt retires. | |
| January 2 | ||
| NL | Raven joins. | |
 TALY | Colombo, Dylan, NanZ, and Rexmy join. | |
| January 1 (approx.) | ||
 DYG | 49, lxt, Manba, MengChuan, and nOnO join. | |
 LUC | Avo joins. | |
| GB | Avo leaves. | |
 CEV | Alep joins. | |
 OXG | BaeMinn, CokeMie, JzinBoo, Let1na, Smile, and Suraj (Coach) leave. | |
| January 1 | ||
 DPTH | DraMa, Gavin, Hitmxn, and OPTIMUM join. | |
