Tennis Professionals

Meet the Team

Eli Alejo

Director of Tennis

Eli Alejo is a USPTA and PTR certified professional coach. Eli is also a recent TTI (Tennis Teachers Institute) graduate and was mentored by Don Henson, one of the original 18 Master Professionals. He has 13 years of experience teaching tennis and has been playing for 43 years. Eli played high school and college tennis in the Philippines. He’s The Former Head Coach for Whitney High School in Cerritos, CA.

His mission is to provide every athlete a solid tennis foundation, skills, and tools to succeed in order for them to grow without limit. By doing this, Coach Eli has been successful with juniors and high school players to achieve their maximum performance. Teaching tennis has been Coach Eli’s passion and a gift that he loves to share. Not only for its health benefits but also as a tool for a lifetime experience.

Afif Demachkie

Staff professional

Afif fell in love with tennis in his home country of Lebanon where he played college tennis in 2003. HIs love for the game became a love for teaching, and he continued his passion by teaching both private and group lessons.

In 2015 he taught summer tennis camps, and instituted his own school for player development in 2017.  He achieved his USPTA certification in 2018.  He is The Former assistant head coach at Windward high school and currently teaching pro and site manager at iTennis Cerritos..

He enjoys seeing the smiles on the faces of his students and loves to see their progress.

Dave Moorman

Staff professional

David Moorman has coached many sports throughout his career. He has worked with i9 sports, (basketball, soccer, flag football). Also, youth sports, club soccer and high school soccer and tennis. For the past six years David has coached and trained high school students at Whitney High School as a boys and girls tennis coach.

David’s coaching experience has allowed him to train players from 4 years old up to high school. His passion is developing players to be their best. David enjoys developing youth and supporting their desires by inspiring them through hard work in skills training and having fun! Tennis is one of his greatest passions that he truly loves to coach and play.

John Nguyen

Staff Professional

John caught the tennis “bug” relatively late compared to other players.  He starting playing in the seventh grade at 12 years old and was so enamored with the sport that he didn’t miss a single day of practice for the next two years.

His hard work paid off as he was able to start playing Varsity singles on his high school team as a Freshman and played all four years.

He later walked on to his local junior college team for one year and then returned to coach is former high school team for two years.

One of his tennis highlights was participating in a clinic with former #1 in the world and 7 time Grand Slam winner Mats Wilander.  John was not only able to play with a legend, but also learn many invaluable insights into the game of tennis from one of the game’s legends.

He is PTR certified and feels fortunate to be able to teach tennis,  a game that has taught him autonomy, self-discipline, sportsmanship, and contentment in life.

Frank Weiskirch

Head Pro Jr. Development

Coach Frank Weiskirch, is a native of Vietnam, who is committed to developing tennis players and instilling the belief that all players can grow without limits. Coach Frank has worked full-time as a tennis professional since 1999. He graduated from the Tennis Teacher Institute, and is a USPTA Elite Professional, and PTR certified Professional. Coach Frank has instructed at the Four Seasons Hotels and Resorts with Master Don Henson in Carlsbad. He has also taught at the City of Irvine, Edge Tennis Academy, Fountain Valley Tennis Center, and is currently an instructor at iTennis Cerritos. His teaching style is influenced by this quote by his Mentor of 21 years Master Professional Don Henson: “The complete tennis teachers are much more than tennis experts. They also possess an in-depth understanding of the body in motion, and have the ability to communicate in a clear and powerful way”

Eric Morgan

Head Pro High Performance

Eric is a certified tennis coach under the Professional Tennis Registry (PTR) and International Tennis Federation ( ITF level 1 and 2). He has been a tennis coach for 19 years and has acquired  vast experience in the field of coaching in all class levels of players including working in other countries. As a coach, he has developed many junior players in the Philippines, Bahrain and China. He was named NCAA coach of the year in 2003.
As a player, he was a junior champion, a representative for the Junior Davis Cup in 1990 and 1991 and a former Top 10 Mens singles player of the Philippines. He is a challenging and dedicated Tennis Coach who is able to tap into the potential of the new generation of tennis players.

Eli Alejo Jr.

Staff Professional

Eli Alejo Jr. was introduced to tennis by his father Eli Alejo Sr. at age 4. Eli immediately fell in love with the sport and his passion for tennis has continued to grow as a a player and now a coach. Eli was a 3x MVP in High School. And also is a college graduate from Vanguard University. 
His passion for coaching started in high school after attending Master professional Don Henson’s coaching seminars with his father. He took those experiences and applied them as a former varsity high school coach and is now currently staffed at iTennis Cerritos. Eli loves working with all levels from beginners to high performance. His goal is to have players develop that same love and passion for the sport.