The collars have problems except maybe for Federer. Berdych and Tsonga - collar is too big. Murray and Djokovic look like giraffes. Tsonga is the only one showing a little sleeve on the hand and that's with all of their arms down.
4 x IG Prestige MP, 70 cm, 376 grams, 386 SW, ALU Power @54, Prince Syn Gut 16 @58