Chelsea beat West Ham 1-0 at Upton Park on Wednesday night . Thibaut Courtois scored the game 's only goal with a first-half header . The Blues retained five-point lead over Manchester City at the top . Chelsea needed Eden Hazard to be in good form to keep Hammers out . Belgian claims games like that 'define if you can be champions or not ' CLICK HERE for all the latest Chelsea news .
Chelsea beat West Ham 1-0 at Upton Park on Wednesday night . Eden Hazard scored the game 's only goal with a first-half header . The Blues retained five-point lead over Manchester City at the top . Chelsea needed Thibaut Courtois to be in good form to keep Hammers out . Belgian claims games like that 'define if you can be champions or not ' CLICK HERE for all the latest Chelsea news .