Chelsea manager Jose Mourinho has called his team 'tactically phenomenal' during the month of April.
The Blues won four and drew one of their five fixtures in April as they fended off title challenges from Arsenal and Manchester United to firm their grip on the title.
Chelsea now just need three points from their last four games to clinch the title.
Mourinho said: "April was the month people were waiting for Chelsea to sleep, to lose a game.
"It was a month with problems, without Diego Costa and Remy, with only Didier and Oscar playing as strikers, and it was exactly the month where we were phenomenal: tactically phenomenal, the team spirit, the way we defended, the way we were clinical in our goals, the stability we showed in every game."