Former Masters champion Jon Rahm withdrew from LIV Golf's Houston event during the second round on Saturday with a foot infection which has put into question the Spaniard's status for next week's US Open.
Rahm's withdrawal came a day after cameras showed him grimacing in pain after hitting a tee shot at the seventh hole on Friday.
Rahm shared 45th place at this year's Masters and missed the cut at last month's PGA Championship
Rahm is scheduled to hold a pre-tournament news conference at 10:30 am ET (1430 GMT) on Tuesday ahead of the June 13-16 US Open at Pinehurst Resort in North Carolina.
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He finished in the top 10 at three majors last year, including at Augusta National where he won the Masters, but has struggled at the blue-riband events since his shock move to LIV Golf last December.
Rahm shared 45th place at this year's Masters and missed the cut at last month's PGA Championship.
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He won his first major at the 2021 US Open and came joint 10th last year.