Boomer Grigsby James Harvey " Boomer " Grigsby ( born November 15 , 1981 in Canton , Illinois ) is an American football fullback who is currently a free agent . He was drafted by the Kansas City Chiefs in the fifth round of the 2005 NFL Draft . He played college football at Illinois State . Grigsby has also been a member of the Miami Dolphins and Houston Texans . Early years . Grigsby attended and played high school football at Canton High School where he was an all - area linebacker during his senior season . He was not recruited to play college football until an Illinois State coach saw him lifting weights in his high school ' s weight room . College career . Grigsby was a four - year letterman at Illinois State University . As a sophomore , he set a school record with 179 tackles and also recorded what would remain a career - high four sacks . The following season , Grigsby tied his own school record with 179 tackles . He came in second behind only future Kansas City Chiefs teammate Jared Allen in the voting for the Buck Buchanan Award , given annually to the top defensive player in Division I - AA . In 44 games ( 40 starts ) , at Illinois State , Grigsby record a school record 580 tackles to go along with 41 . 5 tackles for a loss , 13 sacks , six fumble recoveries , five forced fumbles and seven passes defensed . He was Gateway Football Conference Player of the Year , a Division I - AA All - America n and Buchanan award finalist each of his final three seasons . Professional career . Kansas City Chiefs . Grigsby was drafted by the Kansas City Chiefs in the fifth round ( 138th overall ) of the 2005 NFL Draft . On July 15 , he signed a three - year , $ 1 . 067 million contract with the team . It included a signing bonus of $ 142 , 000 and base salaries of $ 230 , 000 ( 2005 ) , $ 310 , 000 ( 2006 ) and $ 385 , 000 ( 2007 ) . In his rookie season with the Chiefs , Grigsby chose to wear No . 51 . He played in all 16 regular season games that year in a reserve role and finished third on the team with 19 special teams tackles . Appearing in 15 games in 2006 , Grigsby again ranked third on the Chiefs in special teams tackles with 18 . He missed one game that season with foot injury . Prior to the 2007 regular season , Grigsby was converted from linebacker to fullback . The transition was chronicled on the HBO reality series " Hard Knocks : Training Camp with the Kansas City Chiefs " . Despite the position change and an injury to his ribs during the preseason , Grigsby made the team . He went on to appear in 13 games for the Chiefs that season including one start . His first NFL reception came on a nine - yard pass from quarterback Brodie Croyle against the Denver Broncos on December 9 , and he finished the season with two receptions for 14 yards . He finished third on the team in special teams tackles ( 12 ) for the third straight season . A restricted free agent in the 2008 offseason , Grigsby was not tendered a contract by the Chiefs and became an unrestricted free agent . Miami Dolphins . On March 4 , 2008 , Grigsby agreed to terms on a one - year contract with the Miami Dolphins . The signing reunited him with current Dolphins running back s coach James Saxon , who was Grigsby ' s position coach with the Chiefs in 2007 . Grigsby won the team ' s starting fullback job in 2008 after incumbent Reagan Mauia was released during final cuts . However , after starting the Dolphins ' season opener against the New York Jets on September 7 , Grigsby was released by the team two days later in favor of free agent Casey Cramer . He spent the rest of the season out of football . Houston Texans . Grigsby was signed by the Houston Texans on May 12 , 2009 . He was waived / injured on August 18 and subsequently reverted to injured reserve . He was released with an injury settlement on August 25 . Absence from football . Grigsby now works as a medical salesman . He comically claimed In The Best of Hard Knocks on HBO that because he was so bad and once cut , the Miami Dolphin ' s offense changed to a Wildcat and also changed how NFL teams across the nation set up their offense . Grigsby works as a color commentator for Illinois State University ' s television coverage for the football team .