English golfer Paul Casey has been forced to withdraw from the US Open through injury, with teenager Andy Zhang taking his place.
Casey hoped he was over a shoulder injury but the former world number three is not yet fit for the rigours of a major.
That led to a call for China-born 14-year-old prodigy Zhang - the youngest player in the tournament since the second world war - who narrowly missed out on qualifying in a play-off.
The previous youngest competitor in the post-war era was Tadd Fujikawa, who was 15 at the 2006 US Open.
"You're always disappointed to miss time due to injury, but it's especially true when you have to withdraw from the US Open," said Casey.
"I've been trying to play my way back and I feel like I probably came back too soon originally."
There is a chance Casey could play at the BMW International Open in Cologne next week.
