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.

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). Also he attended Nick Bollettieri Tennis workshop. He served as a Davis cup coach and worked with the Junior National team of Bahrain. He developed many junior players and worked with high performance players in China.  He has 20+ years of coaching experience in all class levels of players. He was named NCAA coach of the year in 2003.
As a player, he was ranked #1 in Juniors and won many junior championships in the Philippines. He played for the Junior Davis Cup in 1990 and 1991 and was a former Top 10 Men’s singles player. He is a challenging and dedicated Tennis Coach who is able to tap into the potential of the new generation of tennis players.

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.

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. 

Jeremiah Sison

Staff Professional

Coach Jeremiah was a head coach in the philippines for 13 years from beginners to advanced level. Spearheaded the local tennis program in the city. He was able to produce Junior Tennis Champions. He also worked as the assistant tennis coach at the University of Philippines.
Coach Jeremiah was ranked #1 during his junior career and was a high school and college varsity and played at the uaap league at the university of Philipines.  He was also  joined Steve Assam Tennis Academy (Former coach of WTA ranked #3 Amanda Coetzer).