(Reuters) - Australia's Jason Day, seeking his eighth PGA Tour victory, rebounded from a stumbling start to preserve a two-shot lead after Saturday's third round of the Arnold Palmer Invitational in Orlando, Florida. Swede Henrik Stenson, who briefly led by one after sinking a 13-foot putt to eagle the par-five sixth, returned a 70 to share second place at 13-under with Americans Troy Merritt (67) and Kevin Chappell (67). More...