He set world “records” for the 16lb shot from the 7-foot circle:

13.38 New York, 1888
13.76 Barrie, Ontario, 1889
14.07 New York, 1890
14.11 St. Catharines, 1891
14.12 New York, 1891
14.22 New York, 1891
14.32 Chicago, 1892
14.75 Ottawa, 1898 not bettered until August 31, 1904 at St. Louis OG
George Gray held the Canadian record until 1939 (six years after his death). He won his first competition in Toronto in 1885, defeating the world record holder, the English champion and the European record holder. He dominated the event internationally for 17 years after that.

9 time Canadian champion in the Shot Put

10 time USA Open champion in the Shot Put