I can’t comment on TOPS, but from my experience, an athletic kid with ADHD can play a team sport successfully, even at a high level, if you’re willing to supplement with a lot of extra clinics and privates. ADHD puts them at a disadvantage in the mental game (slow processing speed, poor spatial awareness, lack of consistent focus), but if they can overcompensate with athleticism and skills, they can hang in there. Even though it's been a struggle for my kid and the rest of the family (time and money), my ADHD kid has benefited from playing a competitive team sport.