About - Douglas County

We believe sports change lives

Teach, Grow and Achieve with TGA Premier Tennis

Tennis promotes fitness

All programs include physical activity and muscle development

Tennis is educational

Many lessons use math and science including scoring, distance and shot making

Tennis builds life skills

Our programs promote respect, honesty, perseverance and sportsmanship

Tennis is a life-long sport

Play with family, friends, colleagues and clients

Swing, volley, and serve!

Discover how fun and exciting tennis can be with TGA

Registration for after-school classes is open! Also check out our Spring Camp and Play Days for this Spring!

TGA of Douglas County



Meet the Team

Mark Stangeland

Mark Stangeland was an Aerospace Engineer with a passion for tennis, business, and teaching kids how to live active, fulfilling lives. He had been working as an engineer since graduating from Western Michigan University in 1999, flight testing state of the art military airplanes like the F-15 Eagle, F-16 Falcon, and the C-5M Super Galaxy. In 2007 he received a MBA from Regis University in Denver, Colorado. Mark has been an avid tennis player since his youth and is a lifetime USTA member, currently playing in the Intermountain Colorado and Colorado Tennis Association (CTA) leagues. When Mark found TGA, he knew this would be the perfect way to get kids active in a sport he loves while owning his own business.

“Joining the TGA family has me feeling empowered to fuse my passions and education in a common goal,” Mark said. “My mission is to bring tennis and all of its benefits to the children and families of Douglas County in a way never experienced.”

Mark, his wife Suzanne, and their children Matthew (8 years old), Charlie (3 years old), and Eleanor (3 years old) live in Highlands Ranch, Colorado.

Anastassiya Zherdeva
Director/Head Coach

Anastassiya is originally from Kazakhstan and has been playing tennis for over 15 years. She played for the college team in Pennsylvania and now she is teaching after-school programs, camps and play days with TGA. In her spare time she loves skiing, snowboarding an palaying 5.0 USTA leagues. Anastassiya and her partner won Colorado State Open in open mixed division in 2016 and Broomfield Open in 2017. She loves sharing her tennis knowledge and seeing her students improve.

Marc Honigsberg
Head Coach

Marc has been with TGA of Douglas County for over 2 years. He enjoys playing tennis with his friends in spare time free time. Marc was assisting our head coaches and now is a Head Coach himself. He likes to challenge students and watch them improve. He is great with children and they love him!

Brian Ross
Head Coach

Brian joined TGA because of his passion for tennis. He was playing #1 position for his High School that was named 1st team all conference all 4 year in Jefco. Brian coached at Pinehurst Country Club for 3 years and he says “Helping developing skills and talent is something that I enjoy doing”.

Ryan Weaver
Head Coach

Ryan is a USPTA certified tennis coach and used to teach at Rocky Mountain Tennis Academy. He loves to work with young kids and help them understand the game.

Andy Petrakowski
Assistant Coach

Andy has enormous love for tennis and enjoys teaching his 2 little kids the game of tennis. You always see how coach Andy is enthusiastic and energetic in class and with kids because he wants to share his passion and show that tennis is so much fun!

Donna Ellsworth
Assistant Coach

Donna graduated with Elementary Education degree and loves working with kids. She had played on her school team and carries this passion through her life. Donna says that the only thing to dislike about working with kids is to see them struggle.

Jeanne Hughes
Assistant Coach

Jeanne i a huge fan of tennis  and used to play for the college team here in Colorado. She used to teach tennis before and now we are lucky to have her join TGA. Jeanne also likes to play pickleball and just recently won a tournament in Arvada

Dawn Selindh
Assistant Coach

Dawn enjoys tennis game and used to coach at Columbine High School before joining TGA. She is great with kids and our students love to play with her and shake hands in the end of the game.

Company History


TGA launched its first Golf Enrichment Programs at six Los Angeles schools. TGA’s focus was to provide PK – 8th grade students with an opportunity to learn golf through an innovate 5 level after-school program. This program made golf affordable and accessible for children, and received an overwhelmingly positive response from schools, parents and students. TGA expanded its programs within Los Angeles area schools to accommodate the demands from students and parents who wanted a golf program within the safe, convenient environment of their schools. The curriculum also provided transition for students to go from their schools to programs at the golf course.


TGA’s first camps and clinics were offered at golf courses. TGA also incorporated the expansion of physical fitness and education components as well as adding a character development initiative within its school programs.


Golf professionals along with entrepreneurs began expressing their interest in the unique sustainable and scalable model of TGA. By the end of 2006, after three years of honing and improving the TGA business model and curriculums, TGA began offering geographically exclusive franchisees which became the TGA Premier Junior Golf Program now running throughout the United States.


The USGA approved TGA’s curriculum under the rules of amateur status and TGA became National Partners with the After School Alliance and the President’s Council on Physical Fitness.


TGA achieved its first ranking in Entrepreneur’s Franchise 500, and won two industry awards for Business Achievement and Player Development.


Golf Magazine named TGA’s CEO, Joshua Jacobs to Golf’s 40 Under 40 list. TGA was named as one of 10 Best Franchise Deals around the world by Entrepreneur, along with jumping 131 spots in Entrepreneur’s Franchise 500 ranking from #450 to #319. TGA was also termed the 4th best youth fitness franchise. TGA also formed the 501c3 TGA Sports Foundation, to be able to apply for grants and funding to serve under-resourced areas as well as mentally and physically disabled youth.


TGA gained its 50th franchise along with having seven multiple franchise owners across the country. TGA also branched out into the sport of tennis, signing a National Partnership with the United States Tennis Association (USTA). TGA’s model is now being offered in both the golf and tennis industries and is known as a leading initiative to grow both sports while providing small business ownership and job opportunities. The TGA / USTA proprietary Enrichment Curriculum is solely used by TGA Franchises within schools. TGA works with USTA National along with USTA Sections, Districts and CTA’s to complete the Player Pathway and help feed the USTA’s adult and junior initiatives to grow the sport.


TGA signs its first tennis franchise. TGA’s Youth Sports Franchise model is now one of the fastest at growing junior golf and youth tennis participation amongst 3-13 year olds. TGA’s motto is to Keep Swinging!® and we strive to provide all American youth with the opportunity to learn golf and tennis in a fun and educational environment.