Grigsby (5'11", 249 lbs.) was a fifth-round draft pick of the Kansas City Chiefs in 2005. He is 26 years old.
Grigsby spent his first two seasons in the NFL as a linebacker, but the Chiefs transitioned him to a fullback last season. He was an important part of the Chiefs special teams units, and that is the role he is most likely being brought in to play.
Here are his career stats: