Not often tested after Terry had turned in a cross to put Swansea in front but was then beaten by Shelvey late on.
Not as strong in individual battles as Terry. Gomis had a lot more success attacking his half of the centre-back partnership.
Deceptively athletic down the right wing and attacked with aplomb, once again having a couple of efforts at goal himself. He was more prone to being exposed by Routledge and Taylor, though.
Gomis won few duels with the Chelsea skipper, who was aggressive and effective at centre-back despite his early own goal.
As safe a pair of hands as ever on the left. Never let Dyer come into the game.
Looked a little lost in a deeper role before half-time but instrumental after the break. Expect him to own the No.10 role from here; Chelsea were lethal with Fabregas higher up the pitch.
A little better on the right in the second half and set up Remy's fourth, but noticeably ineffective in the No.10 position before half-time.
Protected the back four as the sole deep-lying midfielder after Chelsea switched to 4-3-3 and marked Sigurdsson out of the game.
Seemed to be heading in the wrong direction every time he got the ball. Didn't track Taylor, who set up the first goal, and struggled to influence the game at all as an attacking force.
Costa will take the headlines but Hazard was Chelsea's best player otherwise. A sparkling mix of direct running, cutting passes and clever movement.
A poacher's hat-trick. Headed home from a set-piece, tapped in from a low cross and then snuck in behind a defender to convert a third from close range. Exactly what Chelsea needed last season.
Couldn't really be faulted for the goals against, and did well to hold several shots with Chelsea players lurking for a rebound.
Defended well but occasionally lost his composure, earning an early yellow card and then seeming to drag Costa down off the ball. His substitution at half-time may have had something to do with his yellow card, but he also appeared to be nursing an injury.
Excellent early on, powering forward unchecked down the left and setting up the Swansea opener. He continued to look a threat and stifled Schurrle and then Oscar, although Ivanovic on the overlap gave him more trouble.
Caught up in a scrum at a corner that allowed Costa to score his first and then probably should have put a boot through Ramires' weak shot rather than letting it roll to Fabianski. Costa stole in for his hat-trick.
Struggled to contain Hazard, who was Chelsea's most influential player in the build-up.
Little impact on the right wing, though he tracked Azpilicueta diligently.
Started very well but once Chelsea began to press him he faded dramatically. Couldn't really stem the flow at all after the half-hour mark and it's a surprise a more defensive option wasn't introduced, though he did grab a late goal after a good run through the middle.
Bright on the left-hand side, curling narrowly over early on and providing a superb pass from which Gomis should have scored after the break. Found himself dragged deeper as Chelsea took control but put in a solid shift.
Linked things up well in the early stages but starved of the ball after half-time and man-marked by Matic.
Like Shelvey, he ran the game for the first 25 minutes but was far less comfortable stopping the repeated raids of Fabregas, Hazard and the rest.
Worked his socks off up front and had some success. Should have scored in the second half, though, and had more joy up against Cahill than he did Terry.