Padraig Harrington, Mark Hensby co-leaders at U.S. Senior Open
Padraig Harrington of Ireland and Mark Hensby of Australia each shot 3-under-par 67 on Thursday to share the first-round lead in the U.S. Senior OpenPadraig Harrington of Ireland and Mark Hensby of Australia each shot 3-under-par 67 on Thursday to share the first-round lead in the U.S. Senior Open