Barclay joined the Boilermakers after spending the 2016 season as running backs coach at Western Kentucky. The Hilltoppers won the Conference USA championship and the Boca Raton Bowl.
Under Barclay's guidance, senior Anthony Wales was named second team All-Conference USA, the C-USA championship game Most Valuable Player and the 2016 Boca Raton Bowl Offensive MVP. Wales rushed for 1,621 yards on 237 attempts (6.8 average) and a school-record 27 touchdowns. Wales' touchdown total led the nation, while his yardage total ranked eighth among Football Bowl Subdivision players. Wales finished the season ranked 13th in the FBS in all-purposes yards with 1,944. In addition to Wales' outstanding season, true freshman Quinton Baker rushed for 542 yards and four touchdowns on 92 carries (5.9 average) en route to being named to the C-USA All-Freshman Team.
Prior to Western Kentucky, Barclay spent two seasons (2014-15) as the running backs coach at Marshall. In 2014, Barclay led Devon Johnson to 1,767 yards rushing on 206 attempts (8.6 average) and 17 touchdowns. Johnson was a 2014 Doak Walker Award semifinalist, finishing the season sixth in the nation in rushing yards and 13th in rushing touchdowns in his first seasons as a running back after transitioning from tight end. As a team, the Thundering Herd led the conference in rushing (271.9), rushing touchdowns (40) and yards per carry (6.8) in 2014.
Marshall's return units thrived under Barclay, finishing fifth nationally in kickoff return average in 2015 (27.6) and 10th in 2014 (24.6). The Herd finished second in punt return average in C-USA in 2015 (10.5).
Marshall won the 2014 C-USA championship, 2014 Boca Raton Bowl and 2015 St. Petersburg Bowl with Barclay on staff.
Barclay spent two seasons (2012-14) as running backs coach at William & Mary, where he guided Mikal Abdul-Saboor to third team All-Colonial Athletic Association honors.
Barclay got his start in collegiate coaching as a graduate assistant at his alma mater, Wake Forest, in 2011.
The Demon Deacons' all-time leading rushing and scorer (non-kicker) with 4,032 yards, 40 touchdowns and 240 points, Barclay is the first player in Atlantic Coast Conference history to lead the league in rushing three consecutive seasons, finishing with 1,192 yards in 2003, 1,010 in 2004 and 1,127 in 2005. He was twice named first team All-ACC and the 2005 ACC Player of the Year. He was inducted into the Wake Forest Football Hall of Fame in 2016. Barclay scored three touchdowns in a game against Purdue at Ross-Ade Stadium on Sept. 21, 2002.
Signed as an undrafted free agent by the Cleveland Browns, Barclay played in the National Football League for three seasons with the Browns (2006-07), Tennessee Titans (2007), New Orleans Saints (2007) and Atlanta Falcons (2008). He also played with the Berlin Thunder in NFL Europe in 2007 and the New York Sentinels in the United States Football League in 2009.
Barclay (born Oct. 15, 1983) graduated from Wake Forest in 2009 with a bachelor's degree in kinesiology. He and his wife, Ashlee, have one child, Houstyn.