Jonathan Hertlein


A certified USTA Official since 2001, Jonathan has helped direct twenty- thousand kids in the largest school tennis promotion in the nation for Beginners World Tennis.  In 2005, he went to work for Dwight Davis Tennis Center to learn MTM where he spent an entire summer teaching under Oscar Wegner. He founded a free Tips 4 Tennis outreach program to get people to take a second look at tennis with MTM.  He keeps it simple and easy to learn to play well.  He likes to keep things as simple as possible, using easy to remember acronyms built to teach MTM such as TTT "touch the ground, touch the ball" and "touch the shoulder" and PPP, "put the ball in play" "place the ball" and "power" the ball (in that order first).  Jonathan teaches adults and youths in Manchester area, U City at Flynn Park, and runs a large summer tennis program for O'Fallon Parks and Rec in Illinois.


I am writing this letter in recommendation of Mr. Jonathan Hertlein. He has been my son Brendan Carlisle tennis instructor for the last 6-7 months. Jonathan took the time to pull my son aside and offer some pointers just because he loves working with these kids. My son immediately wanted to get in touch with him because of the time he took to just give a few pointers to a high school student just trying to get better.

The last six months or so have been a great experience for me and my son learning the proper way to play the game of tennis. Jonathan has taken my son from an OK player to one of the elite players in his conference. He attends East Alton Wood River Community High School which is the small school conference SCC West. Brendan is undefeated in conference so far and has only lost 1 match all year.

I would recommend Jonathan to anyone who is looking for a knowledgeable, great teacher and motivator for the game of tennis. Brendan has recently signed a letter of intent to continue his tennis career next year at Lindenwood University in Belleville which is due to the hard work and great instructor that Jonathan has been. If you have any questions feel free to contact me at any time. Thanks
Darren Carlisle,
[email protected]

Jonathon, I wanted to write you and thank you for all that you did for Katherine in her years at Incarnate Word Academy. As you know Katherine had never picked up a tennis racket until she met you at the tryouts her freshman year.  She was going to try out and hoped to make the team just to stay in shape for soccer.

With your help and guidance she first developed a passion for tennis and then started to develop the skills that you continually worked on with her. Over the last four years with your coaching she continued to improve her game. Katherine was offered soccer scholarships that she has turned down because she now wants to play tennis in college. While she has been offered at NAIA schools she has decided to walk on at a Division 1 school in Southeast Missouri.

During her four years with you,  Katherine went from a girl who was hoping to make the team her freshman year to the number 1 single on the best team in IWA history.  The only loses she had her senior year were to nationally ranked girls. When her senior year started most people thought if she would have won just half her matches as a number one in our conference it would have been a major accomplishment.  She finished 40 – 12 and was named 1st team all conference in the toughest conference in the state.

I just wanted to thank you for all that you did for Katherine, you have made a lifetime of wonderful memories for Debbie and me, and given Katherine the skill and confidence to compete at the highest level.  Please make sure you contact us whenever you are in town just to visit and maybe slip in a quick lesson. Thanks, Terry Hickey 314 -517-2439


Jonathan Hertlein

MTM Tennis Pro/Tester

O’Fallon, IL

[email protected]


Flynn Park St. Louis

O'Fallon IL Parks & Rec