Wladimir Klitschko stopped Tony Thompson in the sixth round to retain his WBA, IBF and WBO heavyweight title belts Saturday night. The 36-year-old champion Klitschko, 58-3 with 51 knockouts, floored Thompson with a big right hand near the end of the fifth round at Stade de Suisse, and the 40-year-old American never recovered. Full Story.(Photo: The Canadian Press)