If there's one thing he lacks, it's mental fortitude on key points. Which has got him undone time and time again (especially against Novak). Federer's '19 Wimby IMO is something he will never recover from mentally. It was his for the taking and he crumbled.Ok, I agree. Fed lacks nothing. His DH BH is a thing of beauty, and against the brutal incessant power of that duo, it can go astray. But I love that he has done it all his career