Our Staff

Mark Brunner

Mark Brunner

Owner, Manager, Teaching Pro

Mark’s early tennis career included successful seasons on his high school and college teams. In 1994, he began to teach tennis full-time at St Clair Tennis. He also helped coach boys and girls teams at Belleville Township High School East. He is certified with the USPTA and many of his students have been State Qualifiers and have earned college scholarships.

Naomi Brunner

Owner, Manager

Naomi has been a recreational tennis player since her WI childhood. Before her involvement at St Clair Tennis, she enjoyed careers as a Registered Nurse and Personal & Family Counselor. She has taught the “Mental Training” in the EX Program and focuses on providing a positive tennis experience at St Clair Tennis.

Debbie and Nick

Nick Mueller

Teaching Pro

Nick played high school tennis and also was on the college team at the University of Wisconsin, Oshkosh. He began teaching tennis during his college years and went on to coach at various colleges, the last being Head Women’s Coach at SIU-Edwardsville. Nick is certified by the PTR.

Dan Brunner

Dan Brunner

Teaching Pro

Dan has been playing tennis since the age of 6 and went on to play for his high school team, where he was Conference champion and a State Qualifier. He was awarded a tennis scholarship to Southwest Illinois College. He was an assistant coach at Belleville West and became a full-time teaching pro in 2013. At St Clair Tennis, Dan is the Junior Development Program Director and the Director of Racquet Maintenance.

Dave Kelley

Dave Kelley

Teaching Pro

Dave grew up playing tennis and was on the Varsity team at Althoff High School in Belleville. After graduation from SIUE, he began his full-time career at St Clair Tennis as a Teaching Pro. He has coached many State Qualifiers and College tennis scholarship recipients.

Johnny Connors - TEMP

Johnny Connors

Teaching Pro

Johnny has a storied tennis history, training in the Belleville/East St Louis area with his brother, Jimmy, with many experiences on the professional circuit. He now brings his skill and expertise to select private students at St Clair Tennis.

Andy Graf

Intern/Teaching Pro

Andy is completing his college studies at Emporia State University with a St Clair Tennis internship, a requirement for his degree in Sports Management.  Andy is no stranger to St Clair Tennis, as he has played tennis from a young age and participated in our Junior programs.  During his internship, Andy will be exposed to all aspects of operating an indoor tennis facility – you will find him in the office, at the front desk, and on the court teaching group and private lessons.  Andy has completed the process for USPTA certification.

Carol Sterthman

Carol Sterthman

Lobby Staff

Anyone who has played at St Clair Tennis knows Carol Sterthman.  She has been a member of the lobby staff for many years.  Carol is also active in organizing local tournaments..

Curtis Martin

Auxiliary Teacher, Lobby Staff, Outdoor Maintenance

Curtis played on the tennis team at Belleville East and is currently playing on the SWIC tennis team.  He works at St Clair Tennis on the court, teaching some of our Junior Program classes and also helps in the Lobby, assisting customers and clients at the front desk. Curtis also helps with the mowing and trimming of our property.

Ryah Baglia

Auxiliary Teacher, Lobby Staff

Ryah is a student at O’Fallon Township High School. Although she is an accomplished Softball player, she has learned the basics of tennis and teaches in our Little Hitter Program. She also is a friendly face in the lobby, where she works at the Front Desk.

Olivia White

Auxiliary Teacher, Lobby Staff

Olivia is a student at O’Fallon Township High school, where she is on the Tennis Team and also a member of the Marching Band.  She has worked hard at her tennis and helps teach in our Little Hitter Program.  She also assists customers at our Front Desk.

Abigail McIsaac

Auxiliary Teacher, Lobby Staff 

Abigail is a student at SWIC. She played Varsity tennis at Belleville East High School. She grew up playing tennis in the St Clair Junior and EX Programs and teaches in the Cardio Tennis and Junior Programs.

Rowen Brunner

Lobby Staff/Auxiliary Worker

Rowen is a student at O’Fallon Township High School, where he participates in golf and tennis.  He has trained in the St Clair Tennis Junior program since he was little and assists teaching in the drills and Little Hitter Program.   

Annabelle Brunner

Website Editing Assistant

Annabelle is a student at Millstadt Consolidated School.  She assists us at St Clair Tennis, where she helps keep website information current.  She also is a participant in our EX Junior Program and practices tennis often as she prepares for her high school tennis career.