Guan Tianlang has ended the second round of the Masters on four-over-par following a one-shot penalty on the penultimate hole in Augusta.
The 14-year-old, who carded a 73 on Thursday, looked on course for an overall score of three-over before he was punished with an additional shot on the 17th for slow play.
That leaves the Chinese teenager directly on the cut mark heading into the weekend.
Guan is the youngest ever player to compete at the Masters.