Career
Lazio
Born in Milan, Mendicino began his career in Rome with the successful Lazio youth system. Mendicino was first promoted to the Lazio first team during the 2007-2008 season, yet did not make a senior debut. At the beginning of the 2008-2009 season, Mendicino played for the first team in pre-season friendlies, having a goal wrongfully disallowed against Liverpool at Anfield.
On February 8, 2009, Mendicino made his Serie A debut, coming on as an injury time substitute for Cristian Ledesma in Lazio"s 1–0 loss to Fiorentina.
Lazio loaned him to Serie B side Crotone for the 2009-2010 season to gain experience. He scored for the club against Modena on November 15, 2009.
During the summer transfer of 2010, Lazio loaned him to Ascoli with the option to switch from loan to 50% co-ownership for €1,5 Million euros. He made his debut during Coppa Italia return match on August 15, 2010 against Lumezzane scoring the first goal of the match just after 6 minutes, whilst he played his first competitive Serie B game for Ascoli on August 22, 2010 in their 0-0 tie against Grosseto.
On July 4, 2013, he moved on loan to Lega Pro Prima Divisione club Salernitana.
On March 25, 2009 Mendicino made his debut with the Italy U-21 squad in a friendly match against Austria.