Instructors
Meet our Instructors
Interested in training at THZ. Check out our coach's bio below.
THZ works with contracted instructors for softball and baseball. THZ has pitching coaches, slap coaches, pitching coaches for baseball and softball, and catching coaches. THZ contracted coaches do 1 on 1, small group, and team instruction.

Mitch Thomas
Baseball/Softball Hitting Instructor
Top Velocity certified coach
16u Prime - Head Coach
17/18u - Head Coach
THZ Owner and Business Operations
Four-year varsity letterman at Ritenour Sr. High School in St. Louis, MO 1995-1998. Suburban North All-Conference – DH/IB Senior Season. He received a scholarship to play football and baseball at Missouri Western State College but was unable to play out a college career due to injury. Moved back to St. Louis to complete a Culinary degree at Forest Park Community College. Mitch graduated with a Bachelor's Degree in Business Marketing and Sales Management.
Mitch, coached 8 seasons as an Assistant Coach at Washington University St. Louis NCAA D3 Softball. Wash U Softball has participated in 4 regional tournaments and received two University Athletic Association Coaching Staff of the Year awards. While at Wash U eight Bears have garnered All-American honors. While at Wash U the team has been ranked in the top 30 in 6 of the 7 seasons. Spending several weeks ranked in the top 5.
Before THZ Mitch coached the St. Louis Lady Spikes and St. Louis Pride Softball teams for 8 seasons. 14 of 19 players who graduated have continued playing in college. Daughter Katlyn Thomas attended nationally ranked the University of Missouri St. Louis NCAA D2 on a softball scholarship. Her 2015 team was inducted into the UMSL Hall of Fame.
Mitch is available for baseball and softball hitting, catching, and fielding lessons.
mthomas@thehittingzonestl.com
Theresa Decosty
Softball Hitting Instructor/Slap Specialist
Coach Theresa attended Francis Howell High School. She was awarded a scholarship to play college softball at Jefferson College and then later on transferred to Columbia College. Theresa would have a chance while at Columbia College to advance and finish 2nd in the country in the NAIA World Series. She led her team to at the time record wins.
She was a 3X All-American, currently holds the stolen base record at JeffCo, and also received the Newcomer of the Year Award as apart of her college team. She had a career college batting average of .465.
Theresa is available for softball hitting/slapping instruction. To request instruction with Theresa, please email at info@thehittingzonestl.com

Jamal Hughes
Baseball Catching/Hitting Instructor
Owner of Brickwall Catching
Coach Hughes was a 3 varsity letterman at Hazelwood Central High School from 2007-2011. He was a two time All-Conference Selection and helped lead his team to two district titles in his years there. After finishing high school, Jamal went on to play at Harris Stowe University (2012-2013), Frank Phillips College (2013-2014), and SEMO's club baseball team (2014-2017). After graduating from SEMO with a degree in Business Management, Jamal went on to play for the Somerton Caneros in the Independent League.
Jamal is available for catching and hitting instruction.