Charl Schwartzel (L) and Louis Oosthuizen of South Africa walk to a green during a practice round prior to the 2011 Masters Tournament at Augusta National Golf Club on April 5, 2011 in Augusta, Georgia.

Charl Schwartzel (L) and Louis Oosthuizen of South Africa walk to a green during a practice round prior to the 2011 Masters Tournament at Augusta National Golf Club on April 5, 2011 in Augusta, Georgia.