David Emilio Mainz Navarro (born 21 June 1985) is a Spanish footballer who plays for Borja as a forward.
Born in Sádaba, Province of Zaragoza, Mainz made his senior debuts with SD Ejea in the 2004–05 season, in Tercera División.
[1] In his second year he scored 11 goals in the regular season (plus two in the play-offs), helping the Basque side to return to Segunda División after a four-year absence.
[4] Mainz appeared in his first game as a professional on 1 February 2014, starting in a 1–0 home win against UD Las Palmas.
On 11 July 2014, Mainz terminated his contract with Eibar[6] and moved to Greek Football League side Athlitiki Enosi Larissa F.C.