In the patch released today, February 3rd, some changes that will affect ranked/competitive gameplay have been made to Oddball.
From Halo Support:
- If the score is tied when a round’s timer runs out, one minute is added back to the timer. If the score is tied at the end of the additional minute, then the round will be declared a tie.
- The match will end if two separate rounds end in a tie and the victory will go to the team with more rounds won.
Also included in the patch is the addition of the HCS variant of Free-For-All added to the custom game modes list.
The game should update the next time it is launched.