Feb 3 (Reuters) - Winners of the Phoenix Open since 1980, following the four-shot victory by American Phil Mickelson on the par-71 Stadium Course at the TPC Scottsdale in Scottsdale, Arizona on Sunday (U.S. unless stated): 2013 Phil Mickelson 2012 Kyle Stanley 2011 Mark Wilson 2010 Hunter Mahan 2009 Kenny Perry 2008 J.B. Holmes 2007 Aaron Baddeley (Australia) 2006 Holmes 2005 Mickelson