The pressure eased on Chelsea manager Graham Potter as his side claimed just a second Premier League victory since October with a 1-0 win against Crystal Palace at Stamford Bridge.
Kai Havertz headed the winning goal just after the hour as the hosts celebrated the £62million signing of Ukraine winger Mykhailo Mudryk, who was paraded on the pitch at half-time, with a vital win to cut the gap on the top four to eight points.
It was a poignant day in West London as Chelsea marked the death of former player Gianluca Vialli before the match, with a host of the Italian's former team-mates returning to pay their respects.