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| May 31 (approx.) | ||
|---|---|---|
 LTHL D | Assassin, Hate, JuJu, Neg, and Reign6 join. | |
| May 31 | ||
 RUSH | GreedZz (Player to Coach) changes position. | |
 USG | ChieF joins. BLINn leaves. | |
 EG | HussB, Mahir, Perform, Remedy, and Willett join. | |
 DNL | Alexx, Bance, Brack, Joee, Rated, and ZeeK leave. | |
 J4L | Willett leaves. | |
  HYXR   Team Exonerate in the TexasCOD Season 1 2019-05-31. | ||
| May 30 | ||
| Modern Warfare is officially announced. | ||
 ATH | Johnny, Nelson, Oog, Pemby, and TTinyy join. | |
 SAGE | TTinyy (Streamer) leaves. | |
 SIC | Demise, Pawns, Redblud, RyanBacardi, and Zyyral join. | |
 SPCE | Assault, FeLo, Proto, and Spacely join. GRVTY is loaned from FaZe Clan. | |
 FaZe | GRVTY is loaned to Team Space. | |
| FaZe | NICKMERCS (Streamer) joins. | |
| May 30 (approx.) | ||
 PROD | Astatiix, Crimzah, Lymax, and Pred leave. | |
| May 29 | ||
 PSH | ReeaL leaves. | |
 BC | ReeaL joins. | |
 ABZ | Lucho joins. Firi leaves. | |
 KNi | Lucho leaves. | |
| May 28 | ||
 100T | CouRage (Content Creator) joins. | |
| May 26 | ||
 NS | Hitmxn rejoins. | |
 ASP | Nelson (Streamer) joins. | |
| Online Kingdom ESGA Alpha in the ACGL 2000 Series 2019-05-26. | ||
| Pablo & Maxo Zaponyx in the GameStop Proving Grounds 2v2. | ||
 Mindfreak Lucky im out of ammo in the MLG GameBattles 1000 Series AP 2019-05-26. | ||
 Legion Nation GSIDS in the MLG GameBattles 1000 Series EU 2019-05-26. | ||
 Nemesis No Org in the MLG GameBattles 1000 Series NA 2019-05-26. | ||
| May 26 (approx.) | ||
 A | BBConor joins. | |
| May 25 | ||
 LGND | EFatal joins. Magik leaves. | |
Day & Night  Aspire x Hyperbolic in the CLT Esports $2,000 LAN. | ||
| Cpadistehx TedTech in the MLG GameBattles Premium $1000 4v4 Search and Destroy 2019-05-25. | ||
Simply Better  Quantum Gaming in the SoCal eSports OTS S2.6. | ||
 Gen.G  eXcalibur in the UMG Gaming $2500 Weekly Rumble 4v4 Search and Destroy 2019-05-25. | ||
| May 24 | ||
 4LF4 | Carlao (Coach) joins. | |
 EMK | Kameeh leaves. | |
 FACT | Kameeh joins. | |
| May 23 | ||
| J4L | aHTracT, Cilantro, Herby, and Kyzer join. | |
| 4LF4 | Krevz joins. | |
 LG | Ricky (Coach/Substitute to Player) changes position. Gunless moves to substitute. | |
| UnderageSquad MuMuGang in the GGOLT Platinum $1000 3v3 S&D 2019-05-23. | ||
| May 22 | ||
 F/A | Lurid renames to 47. | |
| May 21 | ||
 NK | Clown, Digod, and Havok join. Lorosco, Preformed, and SweeTJ leave. | |
 MAZ | Wrecks leaves. | |
 ENVY | Assault leaves. | |
| May 20 | ||
| FaZe | Tfue (Streamer) leaves. | |
 LanZz | Disarray leaves. | |
| May 19 | ||
GT |  Usty eSport Stark.Meruem in the Gameturnier Zürich 2019 2. | |
| Gen.G WatchThePin in the MLG GameBattles Premium $1000 5v5 CWL Variant 2019-05-19. | ||
 Forfeit Gaming  Skpk Carnage in the TorontoXP 2019. | ||
 Bravado Gaming  White Rabbit Gaming in the VS Gaming Championship 2019 Open Cup 3. | ||
| May 18 | ||
 4LF4 Team  Absolute Zero in the ArenaOn 2019 5v5 Variant Season 4 Variant 1. | ||
 Libalent Vertex  Rush Gaming in the CWL Japan National Cup Anaheim 2019. | ||
 N7 Esports  Kazek Esports in the TDJ Division Pro 2019 Pacific Apertura Playoffs. | ||
 WestR DJL in the UMG Gaming $2500 Weekly Rumble 3v3 Search and Destroy 2019-05-11. | ||
| May 17 | ||
 LGN N | Moose, Nastie, and QwiKeR join. | |
 VrT | LuKinas leaves. | |
 REC | Tommey (Player to Streamer) changes position. Denz moves to starting roster. | |
 SWN | QwiKeR leaves. | |
 Talent Team  Luminosity Gaming in the CWL Blackout After Dark 2019-05-17. | ||
| May 16 | ||
| VrT | JHustleR, Ninnja, and Vixen join. Krevz and Carlao (Coach) leave. | |
 NL | JHustleR leaves. | |
| 4LF4 | Hnaugur leaves. | |
 NexT | OMGui, Paralyze, and Tonyy join. Lorosco leaves. | |
| May 15 (approx.) | ||
| J4L | Cells and Hollow leave. | |
 sKAE | DreeyK joins. Sheed leaves. | |
| May 15 | ||
| sKAE | Kheyze joins. Cllyne leaves. | |
 RMG | aHTracT leaves. | |
| May 14 | ||
| VrT | Kheyze leaves. | |
| SAGE | Proto joins. Vivid leaves. | |
| May 13 | ||
| KNi | Faxez, Lucho, Morder, Reivax, and Rexmy join. | |
| RMG | Pentagrxm leaves. | |
 VANI | Ethan2Nice, Evasion, and Swarley join. | |
| May 13 (approx.) | ||
 DIV | Phantom joins. TPiece leaves. | |
| May 12 | ||
 FUT | Seedy leaves. | |
| BC | BuRRn retires. | |
| FACT | BaAcK leaves. | |
 Black Claw eSports  Radiant Esports in the EEG Malta 2.0 2019. | ||
 Giants Gaming  Movistar Riders in the MLG GameBattles 1000 Series EU 2019-05-12. | ||
| N7 Esports Kazek Esports in the TDJ Division Pro 2019 Pacific Apertura Regular Season. | ||
| May 11 | ||
| RMG | Elusoryy leaves. | |
| OnxyMinions BraveFalcon63 in the CheckMate Gaming Elite $1000 4v4 S&D 2019-05-11. | ||
 Chaotic Esports Aspire eSports in the The Astro War Houston Open 2019. | ||
| Libalent Vertex Rush Gaming in the MLG GameBattles 1000 Series AP 2019-05-11. | ||
| Korean Macro Steve the ske in the MLG GameBattles 1000 Series NA 2019-05-11. | ||
| WeLoveCOD Yerrr in the UMG Gaming $2500 Weekly Rumble 5v5 Variant 2019-05-11. | ||
| May 10 (approx.) | ||
 RAD | Niall, Runner, and Smokes join. Dxsable, KidzZ, and Saiyan leave. | |
| May 10 | ||
 UYU | Zaptius moves to starting roster. Proto moves to substitute. | |
| WestR MuMuGang in the UMG Gaming Prime $1100 3v3 S&D 2019-05-10. | ||
| May 8 | ||
| WestR Prospart in the Team Beyond $1,000 2v2 Search and Destroy 2019-05-08. | ||
| May 7 | ||
| RMG | Apox leaves. Staan (temporary substitute) leaves. | |
 KAI | Cammy, Defrag, Joshh, Nolson, and Weeman leave. | |
| LanZz | LewTee (Player to Coach) changes position. | |
| May 6 (approx.) | ||
| NS | Believe, Eleiviate, Neod, Nova, and Stamino leave. | |
 VRTX | Creza, Denza, Gradicals, Moose, and Nastie leave. | |
 SNG | CleanX returns from loan to Legion Nation. | |
| LGN N | BBConor, Chaaxter, Linney, and Traudey leave. CleanX's loan from Team Singularity ends. | |
 CRAZY | Abuzah, Cobra, mAxxie, YuuzL, ZaaQ, and Avamanil (Coach) leave. | |
 NEVE | Aroma, Cxllum, FRIMJ, Hypno, and Midgxt leave. | |
 FUE | Cranky, Ibra, Iviano, Kivi, and Phantom leave. | |
 DRG | Camph, Kolgaa, Kuy, Laser, and Sharhy leave. | |
| May 6 | ||
| FaZe | GRVTY returns from loan to Elite and Helix. | |
 EaH | Diamondcon, Holler, Oog, and Pemby leave. GRVTY's loan from FaZe Clan ends. | |
| sKAE | Cllyne and DScoTz join. Fallzy and Paralizy leave. | |
 eXc | Deelo, Landon, Owakening, PDasson, and Reaper join. | |
 F7 | Astatix, Faisal, Khizma, Spjce, and Swanny27 leave. | |
| PROD | Astatiix and Lymax join. Alkazah and Guner leave. | |
| May 5 | ||
N7 Esports  Furious Gaming in the ArenaOn Série A 2019 Season 3 Playoffs. | ||
 100 Thieves  eUnited in the CWL London 2019. | ||
Mindfreak  Kairos Esports in the CWL London Open 2019. | ||
 WClick Hawks in the TDJ Division Main 2019 Atlantic Apertura Regular Season. | ||
 Focus Esports  As Gaming in the TDJ Division Main 2019 Pacific Apertura Regular Season. | ||
| May 4 | ||
 SVG | Team signs roster of  Nova Dragons. CruxiaL, Dezer7z, Kondelius, Radiiz, Relays, and SteemZ join. | |
 ND | Roster is signed by  Savage Esports. CruxiaL, Dezer7z, Kondelius, Radiiz, Relays, and SteemZ leave. | |
| VANI | Neonn and Zinx join. | |
| PlayMe StandOnyx in the UMG Gaming $2500 Weekly Rumble 2v2 S&D 2019-05-04. | ||
| May 3 | ||
 SZ | Cruze, Immense, Liaym, Micka, Tyson, and Excite (Coach) join. | |
4LF4 Team  Virtue Gaming in the ArenaOn Série A 2019 Season 3. | ||
| May 2 | ||
 TOR | Team is announced as a Call of Duty League franchise team. | |
 PAR | Team is announced as a Call of Duty League franchise team. | |
 NY | Team is announced as a Call of Duty League franchise team. | |
 DAL | Team is announced as a Call of Duty League franchise team. | |
 ATL | Team is announced as a Call of Duty League franchise team. | |
| KAI | Cammy, Defrag, Joshh, Nolson, and Weeman join. | |
| May 1 | ||
| NS | Believe, DraMa, Eleiviate, Neod, Nova, and Stamino join. | |
| FUE | Cranky, Ibra, Iviano, Kivi, and Phantom join. | |
| May 1 (approx.) | ||
| EaH | Diamondcon, Holler, Oog, and Pemby join. GRVTY is loaned from FaZe Clan. | |
| FaZe | GRVTY is loaned to Elite and Helix. | |
| NEVE | FRIMJ joins. Trockay leaves. | |
| ABZ | Fede joins. | |
 SLPR | JamesJHR leaves. | |