Friday brings London, England Day 5 of the 2012 Wimbledon Tennis Championships Tournament, and the day features some marquee matchups. The tournament has already seen one huge upset in Lukas Rosol's victory over Rafael Nadal; Friday may very well bring more. Full television coverage and information on how to watch online is below. Scores and updates are also available at SI.com's live scoreboard. The featured matchups include both No. 1 seeds in action: Maria Sharapova will take on Su-Wei Hsieh, while Novak Djokovic is matched up with Radek Stepanek. Roger Federer is also playing, facing off with Julien Benneteau. All of those matches take place at the very beginning of coverage, at 4 a.m. PST.
Television Coverage: ESPN and ESPN3 from 4 a.m. - 2 p.m. PST
Watch Online: Streaming coverage provided via Wimbledon or via Watch ESPN
For updates, scores and more from the 2012 Wimbledon Tennis Championships, stick wit this storystream. For all things tennis, check out SB Nation's dedicated tennis hub. And don't miss SB Nation on YouTube: