Withrow has also played for the San Diego Chargers and St. Louis Rams.
Withrow attended Mead High School in Spokane, Washington, and was a letterman in football, basketball, and baseball.
Withrow played college football at Washington State University.
Withrow suffered an injury while with the Chargers that led to the signing of veteran center Jeremy Newberry.
In the early 2010s, Withrow founded The King's Craft Coffee Co, which is based in Poway, CA.