From 1923 to 1926, he served as the President of the PGA of Canada. Nicol won the PGA of Canada Championship in 1922 and was runner up in both 1919 and 1924. He also finished tied for second in the 1913 Canadian Open. In the 1930 Canadian Open, he led after two rounds which was eventually won by Tommy Armour.
Nicol Thompson was the older brother of Stanley Thompson who is credited with being Canada’s greatest golf course architect. When Stanley Thompson returned from the First World War Nicol Thompson and George Cumming. They formed the firm of Thompson, Cumming, and Thompson golf course designers.
Nicol is credited with designing much of Brantford, the original nine holes at Owen Sound, nine holes at Royal Muskoka, the original layout at Summit, the Windermere club (along with Cumming) and nine holes at Midland. He also worked with Stanley on both courses at Chedoke in Hamilton. And following his retirement at the Hamilton G&CC he worked with Stanley at Whirlpool, Niagara Parks in Niagara Falls. where he became that club’s first Pro/manager.