He played college football for the Michigan State Spartans and was selected by the Jets in the third round of the 2006 NFL draft.

[13] Smith suffered a medial collateral ligament (MCL) injury on his left knee during the August 10, 2012, preseason loss to the Cincinnati Bengals.

[16] Smith was hired by the Buffalo Bills to be the assistant special teams coach on January 15, 2015.

[17] He served two seasons in Buffalo on Rex Ryan's staff before being dismissed by new coach Sean McDermott.

Smith stated that he had suffered thirteen documented traumatic brain injuries and had been denied disability compensation for his “head, neck, and lumbar spine impairments” and “marked decreased shoulder range of motion, rotator cuff weakness, and moderate to severe shoulder arthritis".