Marat Safin: The Russian tennis player who used to be ranked No. 1 in the world seems to be contemplating an early retirement after stumbling badly at the Wimbledon and then the Swedish Open. “I’m tired of the tour, tired of staying at hotels and tired of traveling…I’ve had enough now … I am tired of everything that has to do with rackets and balls. I want to do something completely different.” He’s only 29 (and nice!), but he’s been mired in a 4-year slump, with a semifinal appearance at Wimbledon in 2008 as his lone impressive Grand Slam showing. [Reuters]