To me, since Basel last year, up until Cincy this year. Fed barely put a foot wrong. Rome, RG, Halle stretch was somewhat unimpressive, and the OG final rough, but he just won so many of the tournaments he played. Since then, Federer just seems 2 levels below that level again. His whole US OPen didn't impress me a whole lot, and he lost before the semis for the first time since 2003. Shanghai was a poor showing too. Not just the match against Murray, but also Cilic (who played poor himself) and Wawrinka (who shouldve won). Now we are two matches in in Basel, and it's again so-so. Do you guys have a clue what the difference in his game is? Just overall execution or a particular aspect?