[5] Kennedy appeared in 6 games for the New York Giants in 1966, and was one of three quarterbacks who saw playing time for them, along with Gary Wood and Earl Morrall.

[6] Kennedy's first NFL game came in relief of Wood in a 55–14 road loss to the Los Angeles Rams.

Kennedy was pulled by Giants head coach Allie Sherman after losing a fumble (which was returned 62 yards by Brig Owens for a Washington touchdown), and throwing three interceptions, all in the first half.

[12] Gary Wood moved on to the expansion New Orleans Saints,[13] but Tom Kennedy never appeared in an NFL game again.

His professional career ended with the Bridgeport Jets of the Atlantic Coast Football League in 1970.