the dress doesnt match the ones an athlete would wear. he looks far more like a german football player then a runner to me. athletes have cut out shirts and different shorts.
if he is a football player the socks are wrong. Also for an athlete i would either remove them or make them slightly larger.

the people here are right about the polycount. way not enogh details for that polycount. though its hard to tell without wires and a lot larger screens. (maybe we are all wrong and the shotsize ruins the details... hard to tell).

keep it up
cheers