I’m all for making up words. Let the kids have their “versing.”
So, I guess, a scrimmage in practice would be preversing.
Repeating a match due to rainout, tie, some other reason would be reversing.
Playing against yourself would be universing.
If your team has to travel for matches, I guess you would be traversing.
If the teams somehow get all discombobulated and get the goals backward, would they be conversing?