Chelsea overcame a resilient Hull side 2-0 to end their losing run and get their season back on track.
Willian and Diego Costa netted for the visitors, who struggled to break down the Tigers in the first half, but as soon as the opening goal went in, it was clear the Blues would be taking all three points back to Stamford Bridge.
Courtois made an early stop from a Snodgrass free-kick, which deflected off the wall and wrong-footed the keeper.
The quality was poor, but chances were being created by both sides.
Ryan Mason saw his close-range strike deflected wide off N’Golo Kante, before a wonderful control and turn from Diego Costa led to a clear chance for Willian - but he limply hit the ball straight at goalkeeper Marshall.