Oakland Raiders: 15 best free agent acquisitions of all-time

Running back? Fullback? Linebacker? Whatever he was, Zack Crockett was a great free agent acquisition for the Raiders in the early 2000s. At 6-foot-2 and 240 pounds, Crockett was a beast of a runner and proved to be an incredible goal line threat for the Raiders from 1999 to 2006.

Drafted by the Indianapolis Colts, Crockett spent three and a half seasons with them before signing with the Jacksonville Jaguars for the remainder of the 1998 season. That offseason, Crockett signed with the Raiders, beginning what would become a great eight-season run with the Silver and Black.

Although he was listed as both a running back and fullback, Crockett did most of his work as a fullback for Oakland. His powerful running style made him borderline unstoppable in goal-to-go situations. This fact is very clearly is proven by Crockett’s statistics during his 13-year career. Specifically during his stint in Oakland, Crockett compiled 1,232 yards and 35 touchdowns.

Crockett was a pivotal piece in the playoff teams of the early 2000s, leading the Raiders in rushing touchdowns twice during his stay.

In seven playoff appearances with the Raiders, Crockett finished with 31 yards and three touchdowns, further proving how the tough-nosed fullback was used under Jon Gruden. Still a member of the Raiders organization as a scout, Crockett is easily one of the best signings in franchise history.