John Daly collapsed near the end of a round of golf Saturday and was taken by ambulance to a hospital.
The 49-year-old Daly was playing in a small, local tournament at Deerfield Golf Club in Jackson's northern suburbs.
Daly's friend, Billy Allen, who was with Daly at the hospital, said the two-time major champion's vital signs were good but doctors were checking on possible injuries to his ribs and fingers.
Deerfield club pro Leigh Brannan, who was at the tournament, said Daly was having trouble with the heat and had some difficulty breathing before being taken to the hospital. Temperatures were near 90 degrees in the Jackson area.
AP Golf Writer Doug Ferguson contributed to this report.