American golfer Jason Bohn suffered a mild heart attack after the second round of the Honda Classic at Palm Beach Gardens in Florida.
The 42-year-old Bohn, a double winner on the PGA Tour, complained of chest pains after shooting a two-over 72 at PGA National and was immediately checked by medical staff on site.
He was then taken to a local hospital where tests disclosed that he had suffered a mild heart attack, officials said. Bohn was reported to be in a stable condition.
Fellow PGA Tour player Tom Gillis tweeted: "Thoughts and prayers go out to Jason Bohn who had a heart attack this afternoon. Hang tough buddy."
Bohn, whose most recent PGA Tour win came at the 2010 New Orleans Classic, missed the cut at the Honda Classic after carding scores of 71 and 72.