Jack Pratt was born April 13, 1906 in Edinburgh, Scotland. A graduate of the Western Kootenay Hockey League's Rossland Ramblers, Pratt joined Pacific Coast Hockey League's Portland Buckaroos in 1928-29 and spent two seasons with the team before signing as a free agent with the Boston Bruins in November of 1930.
The Edinburgh, Scotland native began the 1930-31 season with the Canadian-American Hockey League's Boston Cubs before joining the Bruins after playing in only five games with the Cubs.
While Pratt spent the majority of the 1930-31 season with the Bruins, in 1931-32 it was the opposite. Managing to play in only a handful of games with the Bruins, Pratt found himself spending the better part of the season with the Cubs before joining the Can-Am Hockey League's Philadelphia Arrows in 1932-33.
In 1933-34 Pratt returned to the WKHL as a member of the Kimberley Dynamiters and spent six of the next years with the team while playing one season with the North West Hockey League's Portland Buckaroos in 1935-36.
In his six years with Kimberley, Pratt was a player/coach for four of those seasons before retiring from the game in 1939-40.
