No other side has claimed more points from losing positions in the top flight this season and Sagna says a strong mentality is the driving factor.
"We trust each other and we promise ourselves to play whatever happens on the pitch," he told Arsenal Player. "When you are 1-0 down it is not always easy to take, especially when it is an own goal.
"But we kept playing, kept fighting. We know we have a good team and we know we can score goals. It happened against Tottenham and we came back again today.
"It will help the team to look forward."