Medalist Sam Randolph, accompanied around the golf course by a chiropractor because of back spasms, captured the U.S. Amateur title today, defeating Peter Persons of Macon, Ga., 1 up, in their 36-hole final.

Randolph, who lost, 4 and 3, to Scott Verplank in last year's final, captured the 85th national amateur title by making an 18-inch birdie at the 35th hole to go 1 up, then halving the 36th hole with a par after hitting his second shot into a bunker. He sank an eight-foot par-saving putt at the Montclair Golf Club to win.

Randolph, 21, a University of Southern California golfer, started getting back spasms Friday during a quarterfinal victory over two-time champion Jay Sigel. The back did not bother him much during his Saturday semifinal victory over Canadian Jack Kay Jr., but it acted up today.

He was treated on the fifth tee and again in the locker room after the 27th hole by Dr. Rich Gueci.

"I guess things like this aren't supposed to be easy," Randolph said. "I was not going to quit. Even if I fell down, I was going to finish."

"The right-side sacroiliac joint is fixated, therefore there is inflammation," Geuci said. "I did some muscle work on Sammy, reducing the muscle spasms he was getting from that side."

Following his second treatment, Randolph birdied the 28th hole to go 1 up.

Persons, of Macon, Ga., and the No. 1 golfer on the University of Georgia team, evened the match the 29th hole and took a 1-up lead by birdieing the 31st hole. Randolph birdied No. 32 and they stayed even until the 35th hole.