Gerard Pique claims Javier Mascherano turned down the opportunity to score his first Barcelona goal by refusing to take a penalty against Rayo Vallecano.
Barca set a new Spanish record by going 35 matches unbeaten in all competitions with a 5-1 rout on Wednesday, but not for the first time this season the Catalans fluffed their lines from 12 yards.
"We told Mascherano to take the penalty kick but he did not have the confidence or has not wanted to shoot, but I asked," Pique said on Periscope.
Head coach Luis Enrique addressed Barca's poor penalty record after the game, but stated it was not a huge concern.
"We are not too good in that statistic, but in the end it was just an anecdote from this game," he said.
"We must improve in this aspect, but I have already said this is not something that worries me too much."
