Elevate Your Tennis Game

Join the elite at our high-performance tennis academy. Perfect your serve, ace your skills!

Elevate Your Tennis Game at Tier1-IBG

Located in Los Cab Sports Village, Fountain Valley, CA, Tier1-IBG is a high-performance tennis academy dedicated to helping players of all levels reach their full potential. With expert coaching and state-of-the-art facilities, we are committed to taking your game to the next level.

Elite Coaching Team and Prime Star Players

Alex Michelson in ATP 36 (left) Learner Tien in ATP 80 (right)

Practice at U.S Open Central Court

Alex and Learner preparing for Grand Slam matches with coaches Jay and Eric.

Our College Players

Our Senior Coach Consultant

Former U.S. National Team Player and Coach, No.6 in the World

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Formerly Davis Cup Player, 2 NCAA Final Four Team Appearances, 3 Top-five National Team Rankings Founder and director of Tier1-IBG tennis Academy. Coach of Alex Michelson and Learner Tien.

Founder and Director—-Eric Diaz

Former US Tennis Federation National Coach, Former ATP coach of Jason Jung ( career high of ATP 118),Former WTA coach of Ashley Kratzer ( WTA117) , Founder and director of Tier1-IBG Academy. Coach of Learner Tien and Alex Michelson.

Founder and Director—Jason Leavitt

Omar El Kheshen is a seasoned tennis coach with 10+ years of experience across collegiate, junior, and pro levels. He’s worked with top WTA and ATP players, including Grand Slam champion Sloane Stephens, and coached at Harvard and Tufts. A former Egyptian national team player and NCAA All-American, Omar holds a Master’s in Athletic Activity Administration and is known for his expertise in player development, technical training, and match strategy.

Omar El kheshen - Director of Tennis

Victor Castro is a former top-ranked junior and collegiate player from Brazil, with over 15 national titles and NCAA Top 100 doubles rankings at San Diego State. He represented Brazil in South American team events and earned multiple All-Mountain West honors. Now a committed coach, Victor brings high school and collegiate experience with a focus on player development, mental toughness, and strategic growth.

Victor Castro - Coach

Tennis Promoter and Investor

Founder—Steven Shi

Former U.S. National Team Coach, Personal Coach for Pete Sampras and other former ATP & WTA ranked top-20 players. Former USTA Director of High-Performance-Tennis, Formerly Ranked 6 thru 15 for over 5 years on ATP Tour, Winner of 10 Grand Prix Titles and Winner of French Open mixed doubles.

Senior Coach Consultant—-Eliot Teltscher

Former National Team Fitness Coach Worked with: Taylor Fritz, John Isner, Marty Fish, Alex Michelsen . ———-Rodney Marshall

Formerly Davis Cup Player, 2 NCAA Final Four Team Appearances, 3 Top-five National Team Rankings Founder and director of Tier1-IBG tennis Academy. Coach of Alex Michelson and Learner Tien.

Founder and Director—-Eric Diaz

Former US Tennis Federation National Coach, Former ATP coach of Jason Jung ( career high of ATP 118),Former WTA coach of Ashley Kratzer ( WTA117) , Founder and director of Tier1-IBG Academy. Coach of Learner Tien and Alex Michelson.

Founder and Director—Jason Leavitt

Omar El Kheshen is a seasoned tennis coach with 10+ years of experience across collegiate, junior, and pro levels. He’s worked with top WTA and ATP players, including Grand Slam champion Sloane Stephens, and coached at Harvard and Tufts. A former Egyptian national team player and NCAA All-American, Omar holds a Master’s in Athletic Activity Administration and is known for his expertise in player development, technical training, and match strategy.

Omar El kheshen - Director of Tennis

Victor Castro is a former top-ranked junior and collegiate player from Brazil, with over 15 national titles and NCAA Top 100 doubles rankings at San Diego State. He represented Brazil in South American team events and earned multiple All-Mountain West honors. Now a committed coach, Victor brings high school and collegiate experience with a focus on player development, mental toughness, and strategic growth.

Victor Castro - Coach

Tennis Promoter and Investor

Founder—Steven Shi

Former U.S. National Team Coach, Personal Coach for Pete Sampras and other former ATP & WTA ranked top-20 players. Former USTA Director of High-Performance-Tennis, Formerly Ranked 6 thru 15 for over 5 years on ATP Tour, Winner of 10 Grand Prix Titles and Winner of French Open mixed doubles.

Senior Coach Consultant—-Eliot Teltscher

Former National Team Fitness Coach Worked with: Taylor Fritz, John Isner, Marty Fish, Alex Michelsen . ———-Rodney Marshall

Formerly Davis Cup Player, 2 NCAA Final Four Team Appearances, 3 Top-five National Team Rankings Founder and director of Tier1-IBG tennis Academy. Coach of Alex Michelson and Learner Tien.

Founder and Director—-Eric Diaz

Former US Tennis Federation National Coach, Former ATP coach of Jason Jung ( career high of ATP 118),Former WTA coach of Ashley Kratzer ( WTA117) , Founder and director of Tier1-IBG Academy. Coach of Learner Tien and Alex Michelson.

Founder and Director—Jason Leavitt

Omar El Kheshen is a seasoned tennis coach with 10+ years of experience across collegiate, junior, and pro levels. He’s worked with top WTA and ATP players, including Grand Slam champion Sloane Stephens, and coached at Harvard and Tufts. A former Egyptian national team player and NCAA All-American, Omar holds a Master’s in Athletic Activity Administration and is known for his expertise in player development, technical training, and match strategy.

Omar El kheshen - Director of Tennis

Victor Castro is a former top-ranked junior and collegiate player from Brazil, with over 15 national titles and NCAA Top 100 doubles rankings at San Diego State. He represented Brazil in South American team events and earned multiple All-Mountain West honors. Now a committed coach, Victor brings high school and collegiate experience with a focus on player development, mental toughness, and strategic growth.

Victor Castro - Coach

Tennis Promoter and Investor

Founder—Steven Shi

Former U.S. National Team Coach, Personal Coach for Pete Sampras and other former ATP & WTA ranked top-20 players. Former USTA Director of High-Performance-Tennis, Formerly Ranked 6 thru 15 for over 5 years on ATP Tour, Winner of 10 Grand Prix Titles and Winner of French Open mixed doubles.

Senior Coach Consultant—-Eliot Teltscher

Former National Team Fitness Coach Worked with: Taylor Fritz, John Isner, Marty Fish, Alex Michelsen . ———-Rodney Marshall

Train with Tier1-IBG

Elevate your tennis skills at our high performance academy in Fountain Valley.

Contact Our Team

We're located in Los Cab Sports Village, Fountain Valley, CA

Have questions? Email us at: [email protected].

We are here to help you with all your tennis training needs.