[3] Playing mostly as a first baseman, he started his professional baseball career in 1906 with the Wisconsin State League's Green Bay Colts.

[2] The Browns had used eight first basemen in 1911 but traded for veteran standout George Stovall from the Cleveland Indians in the off-season.

A St. Louis newspaper commented that Tennant "had the goods, but he came just one year late to land the regular job".

[1] In 1913, Tennant returned to the Pacific Coast League, displacing Hughie Miller as the starting first baseman for the Sacramento Solons.

[1] Tennant died in San Carlos, California, in 1955 and was buried in Holy Cross Cemetery.