Two-time major winner John Daly collapsed at a minor tournament in Illinois on Saturday and had to be hospitalised.
The 49-year-old golfer was playing at the Deerfield Golf Club in Illinois and collapsed at the 18th tee.
Daly had tests done at hospital in Jackson, according to friend Billy Allen, who added that his vital signs were good and doctors were examining him for possible injuries to his rib and finger.
Deerfield club professional Leigh Brannan confirmed to Associated Press that while playing on a very hot day, Daly was having difficulty breathing on the course.
"He was struggling pretty badly right before he collapsed," Brannan said.
"But we're all hoping it's nothing serious and that he was just a little dehydrated. He was even telling (Allen) he still wants to play (on Sunday)."
Huge sum raised for charity.
Englishman disappointed to miss out.
American holds off double challenge to take crown.
Swede looking for solutions.
Tournament sold out months in advance.
New dad enjoys stellar month.
Pace-of-play system retained.
Travel industry reveals recent trends.
Finca Cortesin impressing golf enthusiasts.
How do you think Matt has done?