Illness forces Serena Williams to retire against Garbine Muguruza Unknown 01:28 Muguruza is into the Indian Wells Open last 16 after Williams retired early into the second set of their third-round match. Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsEuropa League: Manchester United boss Ole Gunnar Solskjaer says 'one kick' was the difference between win and loss in finalAsian Boxing Championships: Amit Panghal, Varinder Singh, Vikas Krishan enter semis as India's medal haul swells to 15Tigers edge Indians 1-0, José Ureña exits early with an injuryZinedine Zidane steps down as Real Madrid manager, reports sayCubs use three-run second inning to blow past Pirates, 4-176ers fan ejected from Game 2 after throwing popcorn at Wizards' Russell Westbrook
