The title is the featured game of the 2021 Season and Call of Duty League. This was the first title to return to 4v4 player count. Matches were contested in best of 5 series with Hardpoint, Control, and Search and Destroy being the three game modes. The series layout was HP/S&D/CON/HP/S&D.
On August 31, 2020, Activision announced that competitive would be switching back to 4v4 after two years of 5v5.
Call of Duty League
- Chicago Huntsmen rebrands to OpTic Chicago
- OpTic Gaming Los Angeles sells their slot to 100 Thieves and becomes Los Angeles Thieves
Call of Duty Challengers
- Black Ops Cold War Competitive Rules
- Call of Duty League Championship 2021
- Call of Duty League 2021 Season
- 2021 Tournaments Portal
- Black Ops Cold War on Wikipedia