Roger Federer, he of 17 Grand Slam singles titles and an esteemed reverence, took to Twitter on Tuesday for a question-and-answer session that came, and went, and returned. Over the hours, he held tennis fans (and journalists and fellow pros, too) captive with a rapier wit and sharp replies. Some may have doubted that Fed himself could be so "peRFect" over the social-media channel, but the Spin is inclined to avoid cynicism in this case and say that he indeed replied to fans himself, one by one—and sometimes to the same fans more than once each, which seemed to cause them to all but froth at the mouth.
Here's a rundown of some of the best exchanges from today's conversations. And what would you #AskRF, if given the chance?