Bacary Sagna hailed the influence of Arsenal substitutes Abou Diaby and Samir Nasri in their FA Cup win at West Ham United.

The Gunners were 1-0 down when the pair came on in the 65th minute of the match. Their introduction sparked an Arsenal comeback and Arsène Wenger's side left east London with a place in the Fourth Round of the competition.

"It's always good when substitutes come on the pitch and can change the game," Sagna told Arsenal TV Online.

"It happened with Cesc Fabregas two weeks ago and now it has happened again. It's good for the team."

In recent years the media has accused some clubs of disrespecting the FA Cup but for Sagna it is still a competition he has eyes on winning.

"[Getting Stoke away in the Fourth Round] is tough but like today we have to go there to win," he said. "We have to think about the Final and about winning this competition."