César was born and raised in Madrid, Spain. He started playing tennis at the age of 7, hitting the ball around with his dad and brother. He went on to play many district, regional and national junior tournaments from ages 11 to 17. César played in Spain's National Junior Championship from ages 15 to 17.
At age 16, César began assisting his coaches, working under the direct supervision of José López-Maeso, once ranked 75 on ATP and former Davis Cup player for Spain. César was ranked the number 1 adult singles player in 1991 by the Northwest Ohio Tennis Association.
César began working for Shadow Valley in 2005. He has been married for 23 years and has two children; a son and daughter. He has a love for music, sports, and world history.