Arsenal boss Arsene Wenger hailed the manner of their 3-0 win over West Ham United.
Olivier Giroud, Aaron Ramsey and Mathieu Flamini struck the goals.
"We just have to keep going. We have won eight of the last nine and we are stronger today than we were at the start of the season," said Wenger.
"We dropped off in this league because we won one of six at the start of the season. Today we are a different team.
"We suffered a lot from the post-World Cup fixtures, players came back and they weren't ready to play."