Torres strike sees off Toffees
The Europa League winners were on top in the second half and sealed victory through Â£50million striker Torres' first league goal since December 23 as Rafael Benitez's seven-month spell ended with a 28th win from 48 matches.
Substitute Nikica Jelavic had three good chances for Everton, but Moyes' men were beaten in his 518th and last game in charge before his move to Old Trafford.
Naismith went close before equalising when he capitalised on a mistake from David Luiz. Luiz failed to control a regulation ball and Naismith nipped in, received a return pass from Victor Anichebe and clipped in over the advancing Petr Cech. Darron Gibson went close from a shot which deflected off Nathan Ake, hit the post, Cech's head, then the post again.
Jelavic, on for Naismith, headed straight at Cech before fluffing a glorious chance when Leighton Baines crossed to the far post.
Chelsea snatched the winner when Oscar's cross from the right was met with a cushioned header by substitute Victor Moses and Torres was clinical, his half-volley beating Howard at his near post.
Cech made a stunning stop at point-blank range when the striker met a Baines cross as Chelsea held on for victory.
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