Jon Rahm will have to wait at least one more year to try to become a two-time U.S. Open champion ... the golf star just withdrew from this weekend's major -- because of a gnarly sore on his foot.
The 29-year-old showed up to Pinehurst this week and tried to play through the pain after a cut in between his toes developed an infection ... but on Tuesday, he told his fans he simply couldn't perform on the course with it.
Rahm had been walking around the venue with a flip flop and a bandage to try to expedite his recovery .