| December 31 (approx.) edit |
|---|
AP |  SZ | Mityan leaves. |
EU |  AMS | Mykiih leaves. |
| December 31 edit |
|---|
LA |  N7 | Thresh and Venkz join. Luckycharmz and Nikels leave. |
NA |  WB | Brolic, Farma, FLawLesS, KingGudnite, and Waterhead join. |
| December 30 edit |
|---|
NA |  J4L | 2ReaL, HumanJesus, and KlinK join. |
| December 29 edit |
|---|
EU |  KCP | Chaaxter, Control, Cxllum, Harry, and Hawqeh leave. |
| December 28 edit |
|---|
NA |  vP | Bielzinho, EliTz, JHustleR, Krevz, and Scarz join. |
EU | | NGL Masters Division 2020 Stage 1 will begin on January 8. |
| December 27 edit |
|---|
LA | | ArenaOn Open 2020 and remainder of 2020 ArenaOn season are canceled. |
EU |  EFY | BBConor, Fusionz, Genesis, Gismo, and QwiKeR join. |
EU |  UT3 | GamerVM, RadiaNt, Xemzed, Xpiry, and xRoToo join. |
| December 26 edit |
|---|
AP |  RUSH |
Nicochan joins as substitute. |
| December 25 edit |
|---|
AP |  CAG | CoD Division disbands. Current, Ngt, Nicochan, NiRu, Noy, and Sokube (Coach/Manager) leave. |
| December 24 edit |
|---|
LA |  ACE1 | ShadizT and Supreeme rejoin. |
LA |  FG | Rizee and Swizzy join. |
EU |  BC | MaxedZ leaves. |
EU |  REC | MaxedZ joins. |
CDL | | Call of Duty League 2020 season format changes from round robin to weekly tournaments. |
CDL |  CHI |
MBoZe joins as substitute. |
| December 23 edit |
|---|
EU | BC | RenKoR leaves. |
EU |  PSH | MethodZ and RenKoR join. |
EU |  FTW | Team merges with  TG Paragon to form  Paragon FTW for NGL Masters Division 2020. Rufia joins. |
EU |  TPF | TG Paragon and  FTW Esports merge teams to form Paragon FTW for NGL Masters Division 2020. KidzZ, Rufia, SXNNY, Visions, and Voltrix join. |
EU |  VTN | CRZY, Morte, Pepo, RippeR, and Slayeer join. |
EU |  GTZB | Bhconc joins. Varandas leaves. |
| December 23 (approx.) edit |
|---|
LA |  777 | HardTrevs, Nano, Sheed, Soldier, and Suricato leave. |
| December 22 edit |
|---|
EU |  FNX | Divinity, FriiZ, Meemo, SamBaldy, Trance, and Powerhouse (Coach) join. |
NA | |   GroundCODBestCOD   Aspire eSports in the UMG Gaming Prime $1000 5v5 S&D 2019-12-22. |
NA | | lildawgs HKv1 in the GameBattles Premium $1000 4v4 S&D 2019-12-22. |
LA | |  Virtue Gaming  NexT Team in the ArenaOn Série A 2020 Season 1. |
LA |  MAF | ShadizT and Supreeme leave. |
| December 21 edit |
|---|
LA | ACE1 | Rizee leaves. |
EU | EFY | Aether, Alfoon, Glaaix, iTorres, and Ninjaso leave. |
EU | PSH | Vikul joins. |
LA | | NexT Team  4LF4 Team in the ArenaOn 2020 Season 1 5v5 Variant 4. |
EU | BC | Vikul leaves. |
| December 20 edit |
|---|
NA |  6G | FA5TBALLA joins. JFatal leaves. |
NA | | Crimsix & Shotzzy iLLeY & Clayster in the BoomTV Code Red 2019-12-20. |
LA |  NexT | Horid joins. |
EU | |  Kawaii Kiwis, Eternal, Unit3k, XLYNX Esports, Ravens Esports,Paragon FTW, Veteranos eSports, Pushing Gaming, and  Killabeez Esports announced as NGL Masters Division 2020 Stage 1 teams. |
NA |  III | Clutchery, Huhdle, Magik, Prophet, and UntitleD join. |
| December 19 (approx.) edit |
|---|
EU |  LUC | Avo, Cobra, Deezy, Haz, and Vadex leave. |
LA | ACE1 | KonGz and Radiz join. |
| December 19 edit |
|---|
EU |  KBZ | Drome, Genue, Knowcks, Lupiz, and Vidal join. |
NA |  GLTY | Foncho, MonGhoster, Phenom, PowInfinity, and Siinless join. |
LA |  JKS | Breiko, HackeR, Nodish, Quantum, Rakten, Revay, Espia (Coach), and KondeliuS (Manager) join. |
| December 18 edit |
|---|
NA |  F/A | Glory retires. |
EU | PSH | ReeaL joins. EriKBooM rejoins. |
LA | ACE1 | iPulse leaves. |
| December 17 edit |
|---|
EU |  KWK | Aether, Alfoon, Glaaix, iTorres, Ninjaso, CHUFI (Coach), and Hernan (Manager) join. |
AP |  FURY | CronusKun and JamesJHR join. Flanners, ManOfChicken, and Middoh rejoin. |
| December 16 (approx.) edit |
|---|
NA | GETB | Archivz, Jimbo, Mosh, and TcM leave. |
| December 16 edit |
|---|
EU | BC | EriKBooM and ReeaL leave. |
AP |  OVRT | Cruze, Fate, Hybrid, Killerpie, Tyson, and Camerxn (Coach) join. |
EU | AMS | AshTastic, Mykiih, RyanGray, TypicalNerd, and ZoSoviet join. |
| December 15 edit |
|---|
NA | F/A | RobbieB3319 retires. |
AF | |  Bravado Gaming LNR All Stars in the ACGL 2000 Series 2019-12-15. |
NA | |  Black Claw eSports  For The Win Esports in the EEG Malta 3.0 2019. |
EU | | Doug Censor Martin v3 Lewtee challenge v3 in the GameBattles EU Challengers: 2000 Series Tournament #5. |
NA | |  UYU  Aspire eSports in the GameBattles NA Challengers: 2000 Series Tournament #5. |
| December 14 (approx.) edit |
|---|
NA | GETB | Archivz, Jimbo, Mosh, ProFeeZy, and TcM join. |
NA |  HYXR | Gunna (Coach) leaves. |
| December 14 edit |
|---|
NA |  A2M | JLags, Legal, Miyagi, Sher, and VeXeD join. |
NA | |  farmer wants a wife shelby v2 in the GameBattles AP Challengers: 2000 Series Tournament #5. |
LA | NexT | Gabz leaves. |
LA |  4LF4 | JHustleR leaves. |
NA |  ASP | Davpadie, Evasion, Standy, Swarley, and Zinx join. |
NA |  CHAO | Hate, Juju, Katani, Koots, Noysii, and Gunna (Coach) join. |
| December 13 edit |
|---|
NA | 6G | GloFrosty, JFatal, Owakening, Reaper, and Willett join. |
NA |  UYU | MRuiz joins. |
| December 12 edit |
|---|
CDL |  LAG |
Blazt joins as substitute. |
LA |  PrB | Caio, Faake, Lorosco, Martino, Mirolla, and RicK join. |
LA | 4LF4 | Martino leaves. |
NA | UYU | Tisch leaves. |
CDL |  DAL |
Tisch joins as substitute. |
EU | GTZB | EPiK, Phoeniix, and Pretoo join. KPainz, Neto, and Stun leave. |
NA |  OXY | Copier, ExiB, Kade, Pawns, and Thrax leave. |
| December 11 edit |
|---|
CDL |  OGLA |
Chino and
Goonjar join as substitutes. |
LA | FG | Fenix leaves. |
CDL |  FLA |
MaNiaC joins as substitute. |
NA |  OG | MaNiaC (Streamer) leaves. |
| December 10 edit |
|---|
NA | |  Team Alpha  Team Delta in the Modern Warfare Streamer Invitational 2019. |
| December 9 (approx.) edit |
|---|
EU | LUC | Deezy joins. Tarpy leaves. |
| December 9 edit |
|---|
CDL | CHI | Sender (Head Coach) joins. |
NA |  E6 | Sender (Coach) leaves. |
EU |  TaL | aRoMa and Cxllum leave. |
AP | SZ | AliceWonderland, Duffle, MiAKi, Mityan, NevvtonX, and Nekokan (Coach) join. |
LA | MAF | ShadizT and Supreeme join. Draken and Relays leave. |
| December 8 edit |
|---|
NA | | SxD Esports in the Red Bull AdrenaLAN 2019. |
NA | | Alpha- ReeceImissyou in the GameBattles NA Challengers: 2000 Series Tournament #4. |
EU | | Doug Censor Martin v2 Pigeons chests in the GameBattles EU Challengers: 2000 Series Tournament #4. |
AF | | Bravado Gaming iEnvy in the ACGL 2000 Series 2019-12-08. |
LA | | NexT Team  Furious Gaming in the ArenaOn 2020 Season 1 5v5 Variant 3. |
NA |  R5 | Taz joins. Dupin leaves. |
| December 7 edit |
|---|
LA | ACE1 | ShadizT leaves. |
EU |  SNG | Chain joins. Maple rejoins. Insight will remain with the team. |
EU | TaL | Maple leaves. |
NA | | Never Back Down  Unjustified Gaming Red in the AGN New Jersey 2020. |
NA | | IDontSeeUsLosing Free800 in the UMG Gaming Fall Ladder 2019 Team Playoffs. |
AP | | Shelby Superman in the GameBattles AP Challengers: 2000 Series Tournament #4. |
AP | |  Libalent Vertex  Rush Gaming in the CDC Japan National Cup 2020 Preseason Tournament. |
| December 6 edit |
|---|
CDL | CHI |
General joins as substitute. |
| December 5 edit |
|---|
CDL | | Call of Duty League Ruleset v1.4 is released. |
CDL | CHI | x2Pac ThuGLorD (Analyst) joins. |
NA |  FaZe | GRVTY leaves. |
CDL |  ATL |
GRVTY and
JurNii join as substitutes. |
LA | ACE1 | Supreeme leaves. |
EU |  Peak | Brechy, Dusty, FrimJ, RiRi, and Virgis join. |
| December 3 edit |
|---|
CDL |  SEA | TeddyRecKs (S&D Analyst) joins. |
| December 2 edit |
|---|
CDL | FLA | Frosty, Havok, Maux, Prestinni, Skyz, and Atura (Coach) join. |
NA |  ATH | PaceR and Teskiy join. Conbix and Return leave. |
NA |  LG | Skyz leaves. |
NA |  eU | Prestinni leaves. |
NA |  Gen.G | Havok and Maux leave. |
| December 1 (approx.) edit |
|---|
AP |  DVT | 6IX, Chingy, Heaven, Inique, and Khau join. |
| December 1 edit |
|---|
EU | | Querella qualifies for NGL Masters Division 2020 Stage 1. |
AF | F/A | Bravado Gaming  ViNCO Gaming in the After Action Report Summer Invitational 2019. |
