The lowest single round score in Major Championship golf is 62 (-8), which was posted by Branden Grace in The Open at Royal Birkdale in 2017 (3rd round). The South African finished sixth.
Eight players have shot nine under par. Gary Player was the first player to achieve that feat at the 1984 USPGA at Shoal Creek (see full list below).
The score of 63 has been achieved 38 times by 35 players, beginning in 1973 with Johnny Miller's sensational final round in the US Open at Oakmont.
63s achieved by Major:
• PGA - 18 times
• The Open - 12 times
• US Open - 6 times
• The Masters - twice
Winning with a 63 (10):
• Johnny Miller ('73 US Open - final round)
• Jack Nicklaus ('80 US Open - 1st round)
• Raymond Floyd ('82 PGA - 1st round)
• Greg Norman ('86 Open - 2nd round)
• Tiger Woods ('07 PGA - 2nd round)
• Jason Dufner ('13 PGA - 2nd round)
• Henrik Stenson ('16 Open – 4th round)
• Brooks Koepka ('18 PGA – 2nd round)
• Brooks Koepka ('19 PGA – 1st round)
• Shane Lowry ('19 Open – 1st round)
Multiple 63s in Majors (3):
• Greg Norman ('86 Open, '96 Masters)
• Vijay Singh ('93 PGA, '03 US Open)
• Brooks Koepka ('18 PGA, '19 PGA)
Same round 63s (2):
• Tom Weiskopf and Jack Nicklaus in the 1st round of the 1980 US Open at Baltusrol
• Brooks Koepka and Charlie Schwartzel in the 2nd round of the 2018 USPGA at Bellerive Country Club
Same Championship 63s (5):
• Tom Weiskopf (1st round) and Jack Nicklaus (1st round) in the 1980 US Open at Baltusrol
• Nick Faldo (2nd round) and Payne Stewart (final round) in the 1993 Open at Royal St George's
• Michael Bradley (1st round) and Brad Faxon (final round) in the 1995 PGA at Riviera
• Henrik Stenson (4th round) and Phil Mickelson (1st) in the 2016 Open at Royal Troon
• Brooks Koepka (2nd round) and Charlie Schwartzel (2nd round) in the 2018 USPGA at Bellerive Country Club
Multiple 63s by venue (10):
• Baltusrol - 4 times ('80 US Open twice, '05 PGA once)
• Atlanta Athletic Club - twice ('01 and '11 PGAs)
• Augusta National - twice ('86 and '96 Masters)
• Riviera - twice ('95 PGA)
• Royal St George's - twice ('93 Open)
• St Andrews - twice ('90 and '10 Opens)
• Southern Hills - twice ('82 and '07 PGAs)
• Turnberry - twice ('77 and '86 Opens)
• Royal Troon - twice ('16 Open)
• Bellerive - twice ('18 PGA)
The 38 rounds of 63 in The Majors:
• May 20th, 2022 - Bubba Watson, PGA, 2nd round, Southern Hills (7-under)
• July 20th, 2019 - Shane Lowry, The Open, 3rd round, Royal Portrush (8-under)
• May 16th, 2019 - Brooks Koepka, PGA, 1st round, Bethpage Black (7-under)
• August 10th, 2018 - Charl Schwartzel, PGA, 2nd round, Bellerive (7-under)
• August 10th, 2018 - Brooks Koepka, PGA, 2nd round, Bellerive (7-under)
• June 17th, 2017 - Tommy Fleetwood, US Open, 4th round, Shinnecock Hills (7-under)
• June 23rd, 2017 - Li Haotong, The Open, 4th round, Royal Birkdale (7-under)
• June 17th, 2017 - Justin Thomas, US Open, 3rd round, Erin Hills (9-under)
• July 29th, 2016 - Robert Streb, PGA, 2nd, Baltusrol (7-under)
• July 17th, 2016 - Henrik Stenson, The Open, 4th round, Royal Troon (8-under)
• July 14th, 2016 - Phil Mickelson, The Open, 1st round, Royal Troon (8-under)
• August 14th, 2015 - Hiroshi Iwata, PGA, 2nd round, Whistling Straits (9-under)
• August 9th, 2013 - Jason Dufner, PGA, 2nd round, Oak Hill (7-under)
• August 11, 2011 - Steve Stricker, PGA, 1st round, Atlanta Athletic Club, (7-under)
• July 15, 2010 - Rory McIlroy, Open, 1st round, St Andrews, (9-under)
• August 10, 2007 - Tiger Woods, PGA, 2nd round, Southern Hills, (7-under)
• August 13, 2005 - Thomas Bjorn, PGA, 3rd round, Baltusrol, (7-under)
• June 13, 2003 - Vijay Singh, US Open, 2nd round, Olympia Fields, (7-under)
• August 17, 2001 - Mark O'Meara, PGA, 2nd round, Atlanta Athletic Club, (7-under)
• August 19, 2000 - Jose Maria Olazabal, PGA, 3rd round, Valhalla, (9-under)
• April 11, 1996 - Greg Norman, Masters, 1st round, Augusta National, (9-under)
• August 13, 1995 - Brad Faxon, PGA, final round, Riviera, (8-under)
• August 10, 1995 - Michael Bradley, PGA, 1st round, Riviera, (8-under)
• August 13, 1993 - Vijay Singh, PGA, 2nd round, Inverness, (8-under)
• July 18, 1993 - Payne Stewart, Open, final round, Royal St George's, (7-under)
• July 16, 1993 - Nick Faldo, Open, 2nd round, Royal St George's, (7-under)
• July 21, 1991 - Jodie Mudd, Open, final round, Royal Birkdale, (7-under)
• July 21, 1990 - Paul Broadhurst, Open, 3rd round, St Andrews, (9-under)
• July 18, 1986 - Greg Norman, Open, 2nd round, Turnberry, (7-under)
• April 12, 1986 - Nick Price, Masters, 3rd round, Augusta National, (9-under)
• August 17, 1984 - Gary Player, PGA, 2nd round, Shoal Creek, (9-under)
• August 5, 1982 - Raymond Floyd, PGA, 1st round, Southern Hills, (7-under)
• July 19, 1980 - Isao Aoki, Open, 3rd round, Muirfield, (8-under)
• June 12, 1980 - Jack Nicklaus, US Open, 1st round, Baltusrol, (7-under)
• June 12, 1980 - Tom Weiskopf, US Open, 1st round, Baltusrol, (7-under)
• July 7, 1977 - Mark Hayes, Open, 2nd round, Turnberry, (7-under)
• August 8, 1975 - Bruce Crampton, PGA, 2nd round, Firestone, (7-under)
• June 17, 1973 - Johnny Miller, US Open, final round, Oakmont, (8-under)
