Dustin Johnson insists he's over it. Johnson trailed Jordan Spieth by a shot as he walked to the tee at the par-5 18th at Chambers Bay last Father's Day. The stunning turn of events - labeled everything from a ''collapse'' to a ''choke'' - left Johnson 0 for 24 at the majors, a number that's risen to 0 for 27 heading to Oakmont. More...