PITTSBURGH (AP) – Arnold Palmer died in Pittsburgh on Sunday at the age of 87.

The United States Golf Association announced the news on Twitter just after 5:30 p.m.

Palmer is regarded as one of the greatest players in golf history.

The USGA said “We are deeply saddened by the death of Arnold Palmer, golf’s greatest ambassador.”

Palmer won 95 professional tournaments including seven major championships.

The blue collar Palmer was nicknamed “The King” and helped bring golf to mainstream America.

Meanwhile, Golf Digest Tweeted: “Rest in peace, Arnie. You are forever a legend in golf and in life.”

CBS Pittsburgh’s partners at the Pittsburgh Post-Gazette reported Palmer died at UPMC Presbyterian Hospital, where he had been since Thursday undergoing heart tests.

He was awarded the Congressional Gold Medal in 2012.