After coaching football at
St. Lawrence University, in Canton, New York, Tallman moved into acting and had a recurring role on the
ABC soap opera
All My Children as Kyle. Tallman appeared as Detrell Thorne, father of the lead character, Robbie in
Rise, as well as
State of Affairs, for
NBC. Tallman also had television roles on
AMC series
Dietland and
CBS series
The Good Fight. His film roles included
Rough Night, and was also a voice actor in the video game
Grand Theft Auto V. He was also a voice actor on
Red Dead Redemption II. Tallman appeared as David Montgomery in three series of
First Wives Club for
Netflix. In March 2024, he was cast as Nick Brandis, a former NBA All-Star and successful entrepreneur in
Your Friends & Neighbors written by
Jonathan Tropper for
Apple TV+ alongside
Amanda Peet and
Jon Hamm. Broadcast in 2025, he returned for the second season in 2026, with the series renewed for a third season that year. ==Personal life==