Jack Nicklaus, the most prolific winner of major championships in golf, celebrates his 80th birthday on Tuesday.
To mark the occasion, here are 18 facts about the Golden Bear, one for each of his major victories.
- Despite his unmatched success at the highest level, Nicklaus only defended a major title on one occasion, at the 1966 Masters.
- Before turning professional, Nicklaus won two U.S. Amateur titles in 1959 and 1961. The second of those wins saw him thrash Dudley Wysong 8 and 6.
- He is one of only two players, together with Tiger Woods, to have completed the triple career grand slam by winning all four majors at least three times. Nicklaus achieved the feat in 1978, claiming his third Open title at St Andrews. Woods followed suit 30 years later with his third U.S. Open win.
- Nicklaus' final appearances at each of the four majors coincided with victories for Woods - at the 2000 U.S. Open, 2000 US PGA Championship, 2005 Masters and 2005 Open.
- There were five years - across three decades - in which Nicklaus claimed two major wins: 1963, 1966, 1972, 1975 and 1980.
- Nicklaus' memorable Masters victory in 1986 was his sixth, the most of any player. He played the back nine in six under par as he become the oldest winner of the tournament at 46.
- The most successful seasons of Nicklaus' career - in terms of PGA Tour wins - came in 1972 and 1973. He won seven tournaments in both of those years.
- The Golden Bear held sole possession of the 54-hole lead at a major on eight occasions and went on to seal victory every time.
- His record margin of victory at a major was achieved at the 1965 Masters, a tournament he won by nine strokes. Gary Player and Arnold Palmer were joint second, with the trio having shared the lead after 36 holes. Nicklaus' nine-shot victory was a record triumph at Augusta until Woods won by 12 in 1997.
- Nicklaus holds the record for the most top-10 finishes at every major, recording 22 top-10s at the Masters, 18 at the U.S. Open, 18 at The Open and 15 at the US PGA. His overall tally of 73 major top-10s puts him well clear of nearest rivals Sam Snead (48) and Tom Watson (46). Woods has 41 to date.
- The last PGA Tour cheque of Nicklaus' illustrious career earned him $11,130, when he finished in a tie for 63rd at the 2004 edition of the Memorial Tournament, aged 64.
- A teenage Nicklaus finished 12th on his PGA Tour debut, at the 1958 Rubber City Open. He was only one off the lead after 36 holes.
- In an stunning run from the 1973 Masters to the 1976 Masters, Nicklaus recorded top-10 finishes at 13 successive majors. Hogan holds the record with 18.
- Nicklaus was awarded the Congressional Gold Medal in 2014 - the highest civilian honour available in the United States. He became only the seventh athlete to receive the honour and the third golfer after Byron Nelson and Palmer.
- When Nicklaus won The Open for the fourth and final time in 1980, it represented his 15th consecutive top-six finish at the event. That remarkable streak featured three of his four wins and six of his seven runner-up finishes.
- Nicklaus won the 1956 Ohio Open as a 16-year-old amateur, beating a host of professional players. He credited the win to Snead, having played an exhibition with the golfing great after round one of the tournament.
- In 17 consecutive seasons from 1962 to 1978, Nicklaus won at least two events on the PGA Tour. He also finished in the top four in the money list in each of these seasons.
- Last but not least, Nicklaus' haul of 18 majors remains the benchmark. Woods claimed his 15th, after an 11-year barren spell, at last year's Masters, but still has lots of work to do to catch Jack.