Arsenal boss Mikel Arteta admits red cards are costing them points this season.
David Luiz and Bernd Leno was sent off in defeat to Wolves in midweek.
“When I was worried about the discipline was on two occasions with Nicolas [Pepe] and Granit [Xhaka]," said Arteta. "We should avoid that. We talked about it.
"The other ones are moments in the game when it's a split second and you have to make a decision. The referee has to make a decision as well. Much less to control from our side.
"What is clear? When you have five red cards from our side, you are going to lose a lot of points. We would have some of those points and be in a different position on the table. That's for sure. There are no teams with five red cards that are on the top [of the league]."
