Alex Patricio Calatrava (born 14 June 1973 in Cologne, Germany) is a former tour tennis player from Spain, who turned professional in 1993. The right-hander won one singles title (2000, San Marino). He reached his highest singles ATP-ranking on February 12, 2001, when he became World Number 44.
In July 2005 Calatrava was humbled by an emerging young talent from Serbia. The player in question was Novak Djokovic. The Serb dispatched Calatrava nonchalantly 6-1, 6-4 success in Umag, Croatia. 
Calatrava was born in Germany while his parents lived there, returning to Spain live in 1980. His Spanish father, Jose, met his French mother, Gabrielle, while working Germany. Calatrava's uncle is the renowned architect Santiago Calatrava. 
Calatrava lived in California from 1989 to 1991 and attended a high school for one year in Palm Springs. He also lived a year in Indian Wells under the guidance of Spanish coach José Higueras. He was the number one ranked junior player in California in 1991. 
- Soper, Aaron (25 July 2005). ATP World Tour (UK) http://www.atpworldtour.com/Share/Match-Facts-Pop-Up.aspx?t=439&y=2005&r=3&p=C361
|url=missing title (help). Retrieved 11 September 2011.
- Profile on ATP-site
- Bogdanovic defeated by Calatrava in 5 set thriller
- Calatrava eased out by Djokovic
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