XSTEF’s tennis programming is split into four primary divisions. our tennis programs are available to all members.



XS offers two different tracks for juniors. Join anytime. XS provides scholarships to students in need and youth in CHA housing. Please call 773-548-7529 for scholarship information/application.


Junior Development

Designed for a recreational progression that can enable a child to potentially play high-school tennis

  • Red Ball, Ages 4-6

  • Orange Ball, Ages 7-9

  • Green Ball, Ages 10-13

  • Yellow Ball, Ages 14-18


Designed for those who intend to pursue college tennis scholarships. Students are grouped based on Universal Tennis Ratings (UTR)

  • Pre-Academy (UTR 1.0-2.9)

  • Academy (UTR 3.0-5.49)

  • High Performance (UTR 5.5-7.9)

  • Junior Elite (UTR 8.0+)


XSTEF offers group and private lessons for adults of all skill levels. XSTEF is a leader in tennis instruction and competitive programs. All of our lessons, teams, and leagues are based on player skill level. Please download our class schedule for current class offerings. If you don’t see a class at a time that works for you, we welcome feedback on what we should offer via our “Leave Feedback” page.

Adult leagues

Leagues for adults who have a USTA rating of 3.5 — 4.0.

Group LessonS

Groups of 3 or more. For beginner to advanced tennis players.

Pro Division

Our pro division is intended for professional tennis players who are pursuing a career in tennis. Professional tennis players such as Taylor Townsend, Monica Puig, and Sloane Stephens have all trained at XS under Coach Kamau Murray. Over the courts of his coaching career Kamau has accumulated, (2) ITF titles, (2) WTA International titles, (1) WTA Premier title, (1) WTA Premier Mandatory title, (1) US Open Title, (1) French Open Finalist. Currently, this group includes an Olympic Gold Medalist (Monica Puig), and a number of Top 20 ITF juniors making the transition onto the pro circuit. These athletes do fitness and tennis training individually and as a cohort at XSTEF. To join this cohort, contact