He is injured, and his movement is bad. Ballbashers can cause an upset or even win a slam if someone really chokes like Fed in 2009 final but they can NEVER dominate. Soderling, Berdych, Del Po, etc. Will never dominate an era like a Sampras, Federer, Nadal, etc
A very good point. And the main difference between ATP and WTA tour. Guys like Federer, Nadal, Djokovic and Murray can hit as hard as the ball bashers, but also possess vastly superior movement and defense, which enables them to force errors or retaliate with their own winners if the ball isn't struck very hard and very deep. Another negative thing about very tall player is their brittle joints, which require guys like Del Po to do a lot of strength training in order not to get injured.