Mertesacker told arsenal.com: "We need these moments where you can see we've got great players and some great finishers with Lukas Podolski on the scoresheet and Aaron Ramsey back on track, Mesut back on track," he said. "All these players could make a difference.
"When you have your whole squad together for as long as possible, that can make a difference. We suffered a bit in the second part of the season but now everyone is coming back to full fitness. We've had some long-term injuries and it's good to have them all back."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball