Oscar Roberto Cornejo "Toto" Hernandez (born 13 March 1983 in Santa Rosa, La Pampa) is an Argentine footballer who plays for his hometown team Club Atlético Santa Rosa.
Cornejo began his playing career with San Lorenzo de Almagro in 2001 where he won a number of championships with the team.
[citation needed] Since 2008 Cornejo has been playing in Chile with Cobreloa and then CD Everton.
On 28 July, Cornejo signed for New Zealand A-League franchise Wellington Phoenix F.C., after a successful trial and made his debut for the club as a second-half substitute in a 2–0 win over the Central Coast Mariners on 22 August 2010.
[1] After the completion of the 2010–11 A-League season Cornejo returned home to Argentina and joined his local team Club Atlético Santa Rosa.