Then on Saturday, Gabriel Paulista was sent off for reacting to Diego Costa's taunts in the eventual 2-0 defeat at Chelsea which also saw Santi Cazorla given his marching orders after a pair of cautions.
Ahead of Wednesday night's Capital One Cup meeting with North London rivals Tottenham, Wenger urged his men to take a less reactive approach in future in order to keep all eleven the pitch for a full 90 minutes, which is likely to lead to positive results.
"I believe we were unfortunate in Zagreb to have a man sent off, and at Chelsea as well, but you want your players to behave in a perfect way and not to show any response at all," Wenger said onArsenal Player.
"We have shown our frustration a little bit in both situations and you cannot afford that.
"We want to get back into winning habits and that is why the momentum is even more important for us."