Yes I agree with what you say. Just that for some reason when a Muslim makes it to the top it feels good whether it be academics, science or sports. And just imagine sportsman post-event interviews thanking Allah and saying their victory was due to him e.t.c. I think that can be another way of da'wah since most westerners are sport fanatics and olympics has a big global audience like how prince naseem persistently re-iterated Allah's greatness in the boxing scene. Sports as an occupation is probably valid - in that way its not a hobby displacing your worship/religious commitments. I do agree that if it is above one's usual occupation, it is likely to waste considerable time. I know a guy who lifts weights and wastes 2 hrs after work and has been doing for the last 2 years. He likes to keep fit and look good. I just see him as wasting considerable precious time. I think why Muslims performed very poorly is because there is no incentive of material reward and likely most muslim countries dont have sportsmen who are occupationally commited to their sport. I highly doubt we performed badly because we suck at sports.