I'd be surprised if Sylvia couldn't dunk at 6ft1 1/2, given he had the best vertical leap in his draft year.Petracca is also by the looks of it stronger (already at least 6 kilos heavier than Sylvia is listed at, despite being so much younger) and I dare say as a result is probably more explosive and powerful, he's probably more athletic (I'd be reasonably surprised if Sylvia is able to dunk a basketball,