What you need to know:
- In Messi's absence Martin Braithwaite took an eighth minute penalty kick, and missed
- Although Barcelona dominated possession and took far more shots, Eibar took the lead after 57 minutes through their captain Kike Garcia
- Ousmane Dembele levelled 10 minutes later with a right foot shot but Barcelona could not find the winning goal
Barcelona ended a difficult year with another disappointing result as they were held 1-1 at home by struggling Eibar on Tuesday.
The result left Barcelona in sixth place in La Liga, seven points behind Atletico Madrid who have played two fewer matches.
"We have to be realistic," said Barcelona manager Ronald Koeman. "The league is very complicated. In life nothing is impossible, but you have to recognise the points gap to a team like Atletico, which seems to give very little away."
The six-time Ballon d'Or winner Lionel Messi is nursing an ankle injury and watched from the stands.
In his absence Martin Braithwaite took an eighth minute penalty kick, and missed. The Dane did put the ball in the net in the 25th minute but the strike was disallowed.
Although Barcelona dominated possession and took far more shots, Eibar took the lead after 57 minutes. Their captain Kike Garcia pounced after a defensive mistake from Ronald Araujo.
"I take responsibility," said Araujo. "I didn't notice that the forward was so close."
"It's a pity, we wanted to win and we played well."
Ousmane Dembele levelled 10 minutes later with a right foot shot but Barcelona could not find the winning goal.
"We were missing Leo, of course," said Koeman, before asking: "How is it possible that we didn't win this match?"
"We created chances, we missed a penalty, and we gave away a goal, the only shot on target they had?"
Barcelona have struggled with injuries this season and lost Philippe Coutinho who limped off in added time.
"He said he was feeling pain in his left knee," said Koeman. "We need to do more tests to find out exactly what's wrong with him."
In the other early game, Lucas Ocampo converted an early penalty and Youssef En-Neyri added a second after the break as Sevilla beat visiting Villarreal 2-0. Sevilla moved onto a tie for third with Real Sociedad and Villarreal.