It’s a new era for Wimbledon tennis – at least in terms of TV coverage, where NBC has lost broadcast rights to a cable competitor. Beginning this year – beginning today, in fact – Wimbledon will be presented in the U.S. not by NBC, but by ESPN, which will present full coverage of men’s and women’s tennis on its own and sister networks. Live first-day coverage begins early, and runs all day, on ESPN2. Watch for defending champion Novak Djokovic (pictured), and Rafael Nadal, who lost to him in last year’s finals. And keep an eye on Roger Federer, who hasn’t won at Wimbledon since 2009 – but is determined to shoot for another.