Napoli managed a 2-2 draw with Roma after coming back from 2-0 down and are now sixth in the Serie A.
“It was difficult because all seemed lost, but Mazzarri has been clever on the bench with the changes he made and Denis was very good. He showed himself to be decisive,” Hamsik said.
“Another thing is also clear. The race for the Champions League is still alive. It’s open to many teams and also to us. There is still a lot to play for.
“We did really well to react. It would not have been easy for anyone, but we are used to these fight backs,” Hamsik concluded.