|Full name||Mark Stephen Hayes|
|Born||July 12, 1949|
Stillwater, Oklahoma, U.S.
|Died||July 17, 2018 (aged 69)|
Edmond, Oklahoma, U.S.
|Height||5 ft 11 in (1.80 m)|
|Weight||170 lb (77 kg; 12 st)|
|College||Oklahoma State University|
|Former tour(s)||PGA Tour|
|Number of wins by tour|
|Best results in major championships|
|Masters Tournament||T10: 1982|
|U.S. Open||T6: 1980|
|The Open Championship||T9: 1977|
|PGA Championship||T15: 1976|
Mark Stephen Hayes (July 12, 1949 - July 17, 2018) was an American professional golfer. He had three victories on the PGA Tour in the 1970s, including the 1977 Tournament Players Championship. He played in the 1979 Ryder Cup as a late replacement for Tom Watson.
Hayes won three times on the PGA Tour: the Byron Nelson Golf Classic and Pensacola Open in 1976 and the Tournament Players Championship in 1977. He also won the PGA Tour-sponsored Tallahassee Open in 1986 and three Oklahoma Opens.
Hayes had his best finish in a major championship at the U.S. Open in 1980, where he began the final round of play two shots out of the lead but shot a final round 74 to finish T6. He was also the first round leader at the 1975 PGA Championship, but finished T22. In the second round of The Open Championship in 1977, Hayes shot 63 at the Ailsa Course at Turnberry to establish a new single round record at The Open Championship by two strokes. The previous record of 65 was set by Henry Cotton in the second round in 1934 at Royal St. George's.
Hayes played in the 1979 Ryder Cup team after Tom Watson gave up his spot to be with his wife at the birth of their first child. Hayes lost both his matches on the second day but won his singles match against Antonio Garrido on the final day, to help the United States to a 17 to 11 win over the European team.
Hayes was well known for his trademark bucket caps.
In the late 1980s, Hayes began preparing for a career in golf course design and construction. In 1990, he established a golf course design firm. His projects were built in Oklahoma and neighboring states.
|No.||Date||Tournament||Winning score||To par||Margin
|1||May 9, 1976||Byron Nelson Golf Classic||66-67-71-69=273||-11||2 strokes||Don Bies||40,000|
|2||Nov 1, 1976||Pensacola Open||68-72-69-66=275||-9||2 strokes||Lee Elder||25,000|
|3||Mar 20, 1977||Tournament Players Championship||72-74-71-72=289||+1||2 strokes||Mike McCullough||60,000|
PGA Tour playoff record (0-2)
|1||1979||Bing Crosby National Pro-Am||Andy Bean, Lon Hinkle||Hinkle won with birdie on third extra hole|
Bean eliminated with par on second hole
|2||1981||Greater Greensboro Open||Larry Nelson||Lost to birdie on second extra hole|
|The Open Championship||T9||T14||T30|
|The Open Championship||T32|
CUT = missed the half-way cut
"T" indicates a tie for a place
|The Open Championship||0||0||0||0||1||2||4||4|