Yeah you or another teammate can play for him this round, but if it's something serious that'll keep him away for much longer, then subbing him for Brum is fine by me.
On a side note, I'm gonna go ahead and start putting in the activity wins in the OP, since that'll save time to prepare for the next round.
So my opponent went inactive too, and skarmx2 would also lose through activity, but I'd be fine with playing
Silverwhiteblue or
Rinzer for my game, and then possibly me or
littlelucario can face one of you in skarmx2's place.
Edit: All of the red
vs. are the wins through activity, so that means they still aren't finalized, and if you wanna change that, then I hope you get it done by the deadline.