Only three golfers in modern times have won four or more majors by a margin of three or more strokes: Jack Nicklaus, Tiger Woods and Scottie.
As Bryson Dechambeau says, Scottie is in a league by himself
SIDEBAR: Greatest margins of victory in golf majors:
US Open – Tiger Woods, 15 strokes (2000)
Masters – Tiger Woods, 12 strokes (1997)
British Open (modern, 1920-present) – Tiger Woods, 8 strokes (2000)
PGA – Rory McIlroy, 8 strokes (2012)
Tiger won the PGA four times, but never by more than five strokes.
Other:
British Open (72 holes, 1892-1919) – three Opens finished with an 8-stroke margin
British Open (36 hole format, 1860-1891) – Old Tom Morris, 13 strokes (1862)
Old Tom didn’t have that difficult a challenge, given that virtually nobody else played golf then. The game was basically contained within Scotland. Anyone was allowed to enter that tournament and only eight people showed up (and two of them dropped out). In those days Prestwick had 12 holes and the competitors played it three times – the equivalent of two rounds at the modern size of 18 holes.
It would be 30 years before a non-Scot would win, and 60 years before an American usurper would win the Claret Jug.
Then the game changed. No Scotsman would win from 1921-1984.

