A rare goal from Timo Werner, only his second in the league since November, saw the Blues move three points clear of their fifth-placed hosts with just five Premier League games to play.
West Ham, who kicked off behind Chelsea on goal difference, had every reason to be affronted at the proposed breakaway league that had dominated the build-up, given that they were above four of the six clubs involved when it was announced.
And it was hardly super stuff from Thomas Tuchel’s side, but they got the job done ahead of a genuine European showdown against Real Madrid on Tuesday night.
However, his xG per 95 minutes of 0.49 is very strong, and shows that he is getting in good scoring positions regularly, something that, if he continues to do, means he will start scoring more frequently.
Obviously it isn't just the fact that he gets in good scoring positions that makes him important to Tuchel's system.
His movement is excellent, as his ability to stretch the opposition defence with his runs in the channel.
Werner's aerial ability is underrated too, as is his hold up play. He has become the focal point of Chelsea's attack, while also being more than capable of playing behind a target man.
He will certainly give Real Madrid's defence a lot to think about on Tuesday, and what better time to properly launch his Blues career than in a Champions League semi-final.
Odds correct as of 20:00 BST (24/04/21)
We are committed in our support of safer gambling. Recommended bets are advised to over-18s and we strongly encourage readers to wager only what they can afford to lose.
If you are concerned about your gambling, please call the National Gambling Helpline / on 0808 8020 133.
Further support and information can be found at and .