In Rein's second season working with Coker, the Cobras won 22 games and qualified for the South Atlantic Conference tournament. The Coker staff earned a 5.54 earned run average, and Griffin Hollifield (2nd team, relief pitcher) and Forrest Arnold (honorable mention, starting pitcher) were named All-Conference.

In his first season working with the Coker pitching staff, Rein helped guide the Cobras to a 28-20 overall record, a 12-12 mark in South Atlantic Conference play and a trip to the South Atlantic Conference championship tournament. As a group, the Coker staff posted a 5.59 ERA, a large improvement from the near 8.00 team ERA from the year before. Ace Dallas Baldwin was named to the All-SAC second team and posted a 3.31 ERA, which was fifth in the SAC. 

Matt Rein joined the Coker baseball staff as the pitching coach in August of 2015.

Rein comes to Coker after a two-year stint at NCAA Division I Longwood University, where he guided a Lancer pitching staff that posted a 5.45 ERA with 440 strikeouts in 2015 and featured first team All-Big South Conference selection Aaron Myers.

Prior to coaching at Longwood, Rein spent time in the St. Louis Cardinals minor league system as a member of the Johnson City Cardinals and Batavia Muckdogs. He made 15 appearances on the mound in 2011 for Johnson City, compiling a 2-1 record with a 3.60 ERA.  He hurled 26 strikeouts in 20 innings pitched, while allowing 23 hits for a .284 average.

Rein also spent a summer pitching for the Lake Erie Crushers of the Frontier League. He made 20 appearances, including 18 starts, throwing 121.1 innings with a 2.36 ERA.
 
As a collegiate pitcher, Rein was a four-year standout at Coastal Carolina University.  In 2011, he was named an American Baseball Coaches' Association (ABCA) All-American after earning Big South Pitcher of the Year accolades.  He was also a two-time All-Big South First Team selection, totaling 21 career wins with a 2.99 career ERA for the Chanticleers.
  
A native of Houston, Texas, he received his bachelor's degree from Coastal Carolina in May 2013.