Kerrigan, who by 1920 was playing out of
Siwanoy Country Club, carded two rounds totaling 143 and won by six shots in the inaugural
1920 Westchester Open golf tournament held on the Gedney Farm Country Club course (now known as Westchester Hills Golf Club). His driving was described as "long and straight". His iron shots were effectively executed and he was able to handle the treacherous greens when the other players could not. His putting was said to be "wellnigh faultless." Arthur Reid, playing out of Ardsley Country Club, was second on 149 and
Jack Dowling came in third on 150. Kerrigan was twice the runner-up in the
Canadian Open championship. in
Toronto,
Ontario, and once again finished in the second spot, this time losing to
Clarence Hackney by the score of 295 to 300. The
1921 Open Championship was the 56th
Open Championship, held 23–25 June at the
Old Course at St Andrews in
St Andrews, Scotland. Former local
Jock Hutchison won his only Open Championship, in a 36-hole playoff over amateur
Roger Wethered. It was Hutchison's second and final
major title. Kerrigan finished in third place, carding rounds of 74-80-72-72=298, and won £40. Kerrigan taught many golfers who went on to success in their own right in golf. Among them was
Jess Sweetser, the first American-born amateur golfer to win the
British Amateur championship which in 1926 was contested at
Muirfield. Sweetser also won the
1922 U.S. Amateur championship. In 1939 he shot the exceptionally low score of 62 on the par-71 Siwanoy course. He was often called "Tee Shot" Kerrigan due to his ability to hit unusually long drives. ==Death==