Hazel Irvine presents highlights from yesterday's opening day of the Masters, the first golf major of 2011. American Phil Mickelson returns to Augusta as the reigning champion. Tiger Woods was the last man to successfully defend the Masters back in 2002 and the four-time champion will be desperate to recapture his best form following a difficult year. Round one 12 months ago was memorable for two veterans, with 1992 champion Fred Couples holding the lead at the end of the day and Tom Watson, a victor in 1977 and 1981, just one stroke behind him alongside Mickelson, KJ Choi, Lee Westwood and Yang Yong-eun.