Juan Carlos Ferrero

Juan Carlos Ferrero Donat (Spanish: [xwaŋ ˈkaɾlos feˈreɾo ðoˈnat]; born 12 February 1980) is a Spanish sports coach and a former professional tennis player. He was ranked as the world No. 1 in men's singles by the Association of Tennis Professionals (ATP), achieved in September 2003. Ferrero won 16 ATP Tour–level singles titles, including a major at the 2003 French Open and four Masters events. He was also runner-up at the 2002 French Open and 2003 US Open. He was nicknamed el Mosquito ("the Mosquito") for his speed and slender physical build.

Ferrero retired from professional tennis in 2012. Afterward, he took up directorship of the Ferrero Tennis Academy in Alicante, Villena, where he himself had been trained. In July 2017, he began coaching top player Alexander Zverev. Their partnership ended after seven months due to differences between them. In 2019, Ferrero became coach to a young Carlos Alcaraz. The partnership was an immediate success, and produced 24 ATP Tour–level titles, including six majors and eight Masters events. In December 2025, Ferrero and Alcaraz ended their partnership. As of January 2026, Ferrero has been working as a mental performance coach for golf player Ángel Ayora.