In 1959, Geiberger turned professional. The following year, he joined the PGA Tour. Geiberger won 11 tournaments on the
PGA Tour, the first being the 1962
Ontario Open and the biggest being the
1966 PGA Championship, a
major title. He won the
Tournament Players Championship in
1975, and played on the
Ryder Cup teams in
1967 and
1975. Geiberger also won 10 times on the
Senior PGA Tour. During the second round of the
Danny Thomas Memphis Classic in
1977, Geiberger became the first player in history to post a score of 59 (−13) in a PGA Tour-sanctioned event. Starting on the tenth tee of the
Colonial Country Club in
Cordova, Tennessee, he shot a bogey-free round of six pars, 11 birdies, and an eagle on the layout. He sank a putt for birdie on his opening hole, and ended the round with a birdie from ; the lone eagle was a holed-out wedge shot. and was two strokes down to
Gary Player on Sunday after a 38 (+2) on the front nine put him at 241 (−11) for 63 holes. He regained the lead with a 32 (−4) on the back nine to finish at 273 (−15), two strokes ahead of Player and
Jerry McGee.
Scorecard: Friday, June 10, 1977 :Source: ==Personal life==