The Calabasas Pro Tennis Championships is a tennis tournament held in Calabasas, California, United States since 2001. The event was part of the ATP Challenger Tour from 2001 until 2010. However, since 2012 the tournament has been part of the ITF Men's Circuit. It is played on outdoor hard courts. Former French Open champion Michael Chang won the event in 2002.
Past finals
Singles
| Year | Champion | Runner-up | Score | 
| 2010 | .svg.png) Marinko Matosevic |  Ryan Sweeting | 2–6, 6–4, 6–3 | 
| 2009 |  Donald Young |  Michael Russell | 7–6(4), 6–1 | 
| 2008 |  Vince Spadea |  Sam Warburg | 7–6, 6–4 | 
| 2007 |  Robert Kendrick |  Donald Young | 3–6, 7–6, 6–4 | 
| 2006 | .svg.png) Mark Philippoussis |  Amer Delic | 6–7, 7–6, 6–3 | 
| 2005 |  Brian Vahaly |  Denis Gremelmayr | 3–6, 6–2, 6–2 | 
| 2004 |  Ivo Karlović |  Alex Bogomolov Jr. | 7–6, 6–3 | 
| 2003 |  Jérôme Golmard |  Lars Burgsmüller | 6–3, 7–5 | 
| 2002 |  Michael Chang |  Cecil Mamiit | 6–3, 7–5 | 
| 2001 |  André Sá |  Michael Russell | 4–6, 6–2, 6–4 | 
Doubles
| Year | Champion | Runner-up | Score | 
| 2010 |  Ryan Harrison 
  Travis Rettenmaier |  Rik de Voest 
  Bobby Reynolds | 6–3, 6–3 | 
| 2009 |  Santiago González 
  Simon Stadler |  Treat Conrad Huey 
  Harsh Mankad | 6–2, 5–7, [10–4] | 
| 2008 |  Ilija Bozoljac 
  Dušan Vemić |  Somdev Devvarman 
 .svg.png) Nathan Healey | 1–6, 6–3, [13–11] | 
| 2007 |  John Isner 
  Brian Wilson |  Robert Kendrick 
  Cecil Mamiit | 7–6, 4–6, [10–8] | 
| 2006 |  Robert Kendrick 
  Cecil Mamiit |  Harel Levy 
  Sam Warburg | 5–7, 6–4, [10–5] | 
| 2005 |  Amer Delic 
  Bobby Reynolds |  Zbynek Mlynarik 
  Glenn Weiner | 7–5, 7–6 | 
| 2004 |  Graydon Oliver 
  Travis Parrott |  Ivo Klec 
  Robert Lindstedt | 7–5, 6–3 | 
| 2003 |  Justin Gimelstob 
  Scott Humphries |  Kevin Kim 
  Jim Thomas | 6–3, 6–3 | 
| 2002 |  Paul Rosner 
  Glenn Weiner |  Justin Gimelstob 
  Paul Goldstein | 6–2, 4–6, 7–6 | 
| 2001 |  Ota Fukárek 
 .svg.png) Ivo Heuberger | .svg.png) Paul Hanley 
 .svg.png) Nathan Healey | 7–5, 3–6, 7–6 | 
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