Dustin Johnson is five shots clear of Tiger Woods. Will that be enough? Tiger’s 31 on the back nine was incredible, but can he repeat? Even bigger charges would have to be made by Ernie Els, who is six back, or Phil Mickelson, who is seven back.
Then there’s Gregory Havret, who also is six back.
The biggest comeback in US Open history has to be Arnold Palmer in 1960, when he charged from seven shots back to win.