Hmmm, maybe the pressure just got to Stenson, with a loose 3-wood into the rough on 16 and Phil 20 feet away for eagle. Could be a 2-shot swing or at least 1 shot gained by Phil.
Impressive chip by Stenson to get it to 5 feet and then a clutch putt and then heartbreaking putt for Phil leaving it a half-a-ball short. No gain by Phil. Two down with two to go - running out of holes for Phil. I can't imagine what it would be like for Phil to shoot 66 and lost ground. This is reminiscent of Watson and Nicklaus at Turnberry in '77, when the both shot 65 on Saturday and then Watson shot 65 on Sunday to beat Jack by a stroke, with both birdieing the last hole.