Retz returns for his fifth season with the Mustangs for the 2016 season, serving as the team's hitting coach. During his tenure, Stevenson has had batting averages of over .300 in three of the four seasons, while coaching three CoSIDA Academic All-Americans in Tony Prescott, Justin Anderson and Heath Johnson.
Prior to Stevenson, Retz was an assistant coach at CCBC Catonsville for two seasons in 2010 and 2011.
A 2009 graduate of UMBC, Retz graduated with a bachelor's degree in interdisciplinary studies and was a two-year standout at first base for the Retrievers from 2008-09. As a senior, he started in 43 games, leading the team in batting average (.383), hits (62) and home runs (10), while finishing second in RBIs (32) and third in doubles (13). His .383 batting average was the second best in the America East while his 10 home runs was sixth.
In 2008, Retz played in 45 games, starting 41 of them. He finished fourth in putpouts (367) and sixth in fielding percentage (.322) in the America East. He was also fifth on the team in batting average (.322), hits (48), slugging percentage (.470) and on-base percentage (.407). He was named the America East Player of the Week on May 5, 2008 after going 8-for-13 in a three-game series against Albany with three runs scored, 10 RBIs and one home run.
Despite only playing two seasons for the Retreivers, Retz ranks third on the school's career hit by pitch list with 18, including a school-record 12 in 2008.
While at UMBC, Retz also served as a student-athlete mentor, meeting with second graders on a weekly basis providing guidance and a role model option for young kids.
Retz spent two seasons at CCBC Catonsville in 2006 and 2007, he led the team with 50 RBIs and six home runs, marks that ranked 12th and 15th in the nation, respectively. He was also second on the team with a .398 batting average while helping lead the Cardinals to the 2007 Maryland Junior College Conference championship.
Also that year, Retz was a Rawlings Gold Glove award winner and the CCBC Male Athlete of the Year. He was selected as a Third Team All-American, All-Maryland JuCo and All-Region XX. His best performance came against Finger Lakes Community College where he was 4-for-6 with three home runs, a double and seven RBIs.
Retz graduated high school from Baltimore's Western Tech where he was a two-sport athlete and named the 2003 Gatorade High School Athlete of the Year. He currently works in law enforcement and reside in Arbutus with his wife, Emily.