Arnold Palmer is out of the hospital and back at work.
A spokesman for the tournament named for the golfing great says Palmer was released on Monday.
The 82-year-old Palmer had been hospitalised overnight in Florida as a precaution because of high blood pressure from new medication.
Spokesman Bev Norwood said Palmer returned to his office on Monday.
Palmer was absent at the 18th green at Bay Hill on Sunday when Tiger Woods won the Arnold Palmer Invitational.
He had been advised to monitor his blood pressure throughout the day. A test about 15 minutes before the tournament ended showed an increase in his blood pressure.