Jason Day famously fell over during the 2015 U.S. Open because of a bout of vertigo, but the world No. 1 was in the vicinity of a more damaging trip on Tuesday in a practice round ahead of this year's tournament at Oakmont.
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Day was preparing to play a bunker shot on the sixth hole when Bill Henaghan, the caddie for amateur playing partner Chris Crawford, suffered a tumble that resulted in a broken left ankle.
Medical assistance was swiftly called for, with Day among those to help the stricken Henaghan before longtime Steelers team doctor Jim Bradley, a member at Oakmont who happened to be walking with the group, headed a first-aid assessment.