Argentina goalkeeper Emi Martinez had a rare bad day, losing the ball in his own area and giving away a indirect free-kick eight yards out after a mix-up with defender Pau Torres. The World Cup-winner then injured his hand when dealing with a mistake in a challenge with Nicolas Jackson.
That only adds to Unai Emery's woes, as he looks to turn around the club's fortunes.
Emiliano Martinez had to be substituted at half-time of the match between Chelsea and Aston Villa in the 13th Premier League matchday of the season. The Argentinian told his manager Unai Emery that he could not continue due to some discomfort in his hand of which, for the moment, no details have come to light.
Robin Olsen, who came on for Martinez, could now get a run in the team.