B.J. Linnenbrink joined the Duke track & field staff as an assistant coach in July of 2009, specializing in throws for both men and women.

In 2012, the throwing program had one of its best performances in school history, including sophomore Michelle Anumba accomplishing the task of being the first Duke female thrower to earn first team All-America honors.  Under Linnenbrink's direction, four throwers qualified for the 2012 NCAA Outdoor Track and Field Championship: Anumba (shot put), Michael Barbas (shot put), Erica Brand (discus) and Andrea Hopkins (javelin).  Also in the outdoor season, Anumba (shot put) and Shannon Sullivan (javelin) finished first at the ACC Championships in their respective events while Barbas (shot put), Brand (discus) and Hopkins (javelin) earned All-ACC honors for finishing in the top three in their respective events.

Indoors, Linnenbrink coached Anumba to second team All- America honors and an ACC title in the shot put.  The Rancho Cucamongo, Calif., native also was tabbed the ACC field Most Valuable Performer for her performance in the shot put and weight throw.  Overall, Linnenbrink's training group set seven school records throughout the indoor and outdoor season.           

In 2011, Linnenbrink guided three Blue Devils to the NCAA Championships in the javelin, including John Austin who earned Second Team All-America honors.  He also coached Hopkins to ECAC and ACC titles in the javelin.

During his first season with the Blue Devils, Linnenbrink helped two of his athletes set school records in their respective events. He led Austin Gamble to the NCAA Championships in the discus after the freshman garnered All-ACC accolades earlier in the season and guided Austin to an ACC title in the javelin. In addition, five Duke throwers advanced to the NCAA Eastern Preliminary Round in 2010 under Linnenbrink's watch.

Prior to his arrival at Duke, Linnenbrink held a similar position at Notre Dame from 2003-07. During that period, he tutored 15 NCAA Regional qualifiers and 17 All-BIG EAST performers, including 2005 BIG EAST hammer throw champion Chip Roberts. In addition, he guided Notre Dame's first female thrower to qualify for the NCAA Championships as well as the first Irish thrower to advance to the outdoor NCAA competition since 1945.

Linnenbrink saw his Irish throwers advance to the NCAA Mideast Regional 15 times in five seasons with two qualifying for the USATF Championships. Additionally, the Notre Dame top-10 lists were radically altered in almost every throwing event under his direction with his student-athletes claiming 10 top-10 efforts on the men's side and a staggering 26 top-10 performances on the women's side. 

As a member of Notre Dame's staff, he was part of five BIG EAST Coaching Staff's of the Year - 2003 & 2005 men's indoor, 2003 & 2006 men's outdoor and 2006 women's indoor.

A former NCAA and USATF Championship qualifier at Florida State, Linnenbrink owns the Seminole school record in the weight throw (20.91m/68-7.25) and ranks among the top-five in FSU history in the hammer throw (59.48m/195-2), earning All-Atlantic Coast Conference accolades as a senior.

Before his successful two-year stint at Florida State, Linnenbrink dominated at the junior college level, where he earned two NJCAA All-America honors at Johnson County Community College in Overland Park, Kan., in addition to seven All-Jayhawk East Conference awards.

Linnenbrink received a bachelor of science degree in physical education from Florida State in 2002 and in 2006, he earned his master of science degree in physical education from Emporia State.

He is a USATF Level II certified coach in throwing events.

Linnenbrink and his wife, the former Monica Hardy, married July 31, 2004.