Karl is a PTR Certified Tennis Professional and has over 30 years of experience in the Chicagoland area. He also enjoys teaching players of all ages and skills levels, although his focus has been on developing junior performance players and has produced local, Midwest and nationally ranked players. Karl played tennis at the College of St. Francis and was an All-Conference, All-District and National Championship participant. He earned his highest USTA ranking in 1993 when he was ranked #6 in the Midwest in the Mens 25 & under division. He has coached multiple USTA and NITTL teams and he also captained a USTA 9.0 Mixed Doubles Team to the USTA National Championships in 2006.

At the club since: 2014