Harrington in lead at Sunningdale with elusive Open double on the line

Ireland's Padraig Harrington
Padraig Harrington will put history out of his head as he heads into Sunday's Senior Open final round at Sunningdale two shots clear of Justin Leonard.
Both Harrington and Leonard can add the Senior Open to the Open Championship, a double only previously done by Darren Clarke, Tom Watson, Gary Player and Bob Charles.