During college Herock played center and offensive tackle for the Richmond Spiders football team.
In 1994, he was hired by the Packers after having served as an intern for them as well, and ascended to the assistant director's spot in 2001.
On December 10, 2018, Herock was named interim general manager after the dismissal of Reggie McKenzie.
Following the season, he was not retained in either capacity by the Raiders and was replaced as general manager by Mike Mayock and as director of college scouting by Jim Abrams.
Herock's new position was personnel advisor to new general manager Dave Ziegler.