Athletic Bilbao failed to improve their form as they were held at the Ipurua by Eibar on Sunday afternoon.
The visitors have now not won in La Liga since August and question marks are now focused on Eduardo Berizzo’s future at San Mames.
The opening goal of the came from the penalty spot and courtesy of VAR after a decision was made on Inigo Martinez. Charles took responsibility for the home side and dully scored, beating Iago Herrerin from 12 yards.
Neither first choice keepers were available for either side and it was Herrerin who proved to be vital for the away side, making a string of saves in the first half to keep the home side at bay.
The leveller did come from Athletic as Aritz Aduriz and Raul Garcia worked hard to carve an opening for Inaki Williams, who beat Asier Riesgo.
Pressure is now firmly on Berizzo to improve things with the Basque club, whilst Eibar sit comfortably in 12th position.
Elsewhere on Sunday, Getafe held on to beat Rayo Vallecano in the Madrid derby.
The goals for the visitors came through Dimitri Foulquier and an own goal, whilst Raul de Romas scored for Rayo, who had Oscar Trejo dismissed late on in the game.