Introduction
Cecil Valdeavilla Mamiit (born June 27, 1976) is a former tennis player from the United States who went onto represent the Philippines. He began his professional career in 1996. He reached his highest individual ranking in the ATP Tour on October 11, 1999, when he became World No. 72.
In 1996, he won the NCAA singles championship as a freshman, a feat that had not been achieved since John McEnroe attended Stanford University in 1978.
Mamiit won the silver medal in the men's tournament at the 1999 Pan American Games in Winnipeg, Canada, after losing the final to fellow American Paul Goldstein. At the 2006 Asian Games held in Doha, Cecil won bronze in the men's tennis singles event losing to Lee Hyung Taik of South Korea. In the doubles event he, along with fellow Filipino-American tennis player Eric Taino, won bronze losing to top doubles players Mahesh Bhupathi and Leander Paes of India.
His best tournament result came at the 1999 San Jose tournament. As a qualifier he defeated Kenneth Carlsen, Andre Agassi (although Agassi was up 6–0 6–6 before he defaulted), Mark Woodforde, and Michael Chang before losing to Aussie Mark Philippoussis 6–3 6–2.
Mamiit represented the Philippines Davis Cup team, where he was undefeated until 2008.
From January 2011 through the clay court season Mamiit was the hitting partner for Maria Sharapova where she won the 2012 French Open to complete her Career Grand Slam.
Career titles
| Legend (Singles) |
| Grand Slam (0) |
| Tennis Masters Cup (0) |
| ATP Masters Series (0) |
| ATP Tour (0) |
| ITF Titles (7) |
Singles (7)
| No. | Date | Tournament | Surface | Opponent | Score |
|---|---|---|---|---|---|
| 1. | July 13, 1998 | Aptos | Hard |  Takao Suzuki |
6–7, 6–3, 6–2 |
| 2. | November 9, 1998 | Las Vegas | Hard |  Maurice Ruah |
7–5, 6–3 |
| 3. | November 23, 1998 | Burbank | Hard |  David Nainkin |
7–6, 7–5 |
| 4. | December 6, 1999 | Burbank | Hard |  Alex O'Brien |
7–5, 6–3 |
| 5. | May 31, 2004 | Tallahassee | Hard |  Björn Rehnquist |
6–4, 4–6, 7–5 |
| 6. | May 30, 2005 | Yuba City | Hard | Paul Goldstein |
6–4, 6–4 |
| 7. | September 11, 2006 | New Orleans | Hard | Amer Delic |
6–3, 7–6 |