Quick feedback: I kept instinctively trying to press the A/B/C on the actual court(?) even after realising it's at the bottom on the first one.
I would suggest either making those clickable, or styled less like buttons somehow, so they don't have such an affordance for being the thing to press.
I would suggest either making those clickable, or styled less like buttons somehow, so they don't have such an affordance for being the thing to press.