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 is scheduled to hold a pre-tournament news conference on Tuesday ahead of the 13-16 June US Open at Pinehurst Resort in North Carolina.
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.