Roger's #1 issue is indeed the back.
He doesn't bend much, sometimes at all on the serve, movement very slow in the baseline, slow recovery for shots, but give Del Bonis credit, he was incredible, some fearless hitting at times, especially from the backhand.
I agree, the racquet is hardly a problem. He could probably play with a Pro Staff 85 and still be top 10. No, the back is the main issue.
The thing is even though Roger hadn't played much this year the back still gave him a lot of trouble.
Wonder if he'll be able to manage it better like he did last year.