What is the nickname of the Argentinian tennis player who once lost to Janko Tipsarević?
Janko Tipsarević:  He also has thirteen victories against other players in the top 10: four wins against Tomáš Berdych, and one each against Fernando González, Mikhail Youzhny, David Ferrer, James Blake, Gaël Monfils, Andy Murray and Juan Mónaco. Juan Mónaco: Juan Mónaco (] ; born 29 March 1984), nicknamed "Pico", is a male former tennis player from Argentina.
Pico