Called up in place of the unexpectedly unwell Cech and he failed to convince, spilling Alonso's low shot straight into Wickham's path to gift Sunderland their equaliser.
Marshalled Borini well and got forward at every opportunity but poor crossing let him down time and again.
Confident and assured on the ball at the heart of the defence but should probably have reacted quicker to track Wickham when Schwarzer spilled Alonso's shot.
Stood up to the threat of Johnson well and ploughed forward to provide countless attacking overlapping opportunities. If only he was left-footed. Unlucky to give away what appeared to be a very soft penalty on Altidore.
Handled everything in front of him with ease and typically dominated his aerial duels. Occasionally looked vulnerable when Sunderland countered with pace in the first half, and shares responsibility with Cahill for losing Wickham for the equaliser.
Created some good opportunities for Chelsea on the transition with his pace and awareness but is not yet enough of a goal threat for the money he cost.
Seems to have lost his mental edge as well as his physical one since the turn of the year and, aside from a couple of semi-dangerous free kick attempts, achieved nothing of note. Replaced by Ba on the hour mark.
Unusually ponderous and indecisive on the ball and reacted to what he felt was a foul by Larsson in the box by crudely whacking him in the face right in front of referee Mike Dean. Lucky to escape a red card but retrospective action seems inevitable.
A calming influence on the midfield, using the ball sensibly and, when the situation presented itself, incisively too. Also tested Mannone with a couple of shots from range, without success.
Links up with Chelsea's creators so much better than Ba or Torres and took his early goal well. Lively throughout but failed to seriously test Mannone again, though he missed one other good chance.
Eager whenever he got the ball but with Sunderland sitting so deep he had no space to dart into beyond the last man. Can't fault his effort but this is not his ideal type of game.
Recovered well from his disastrous error against Manchester City to deliver a largely solid display. Not primarily at fault for Eto'o's opener and did everything else required of him, rising to the challenge of Chelsea's late aerial bombardment.
Only troubled defensively when Ivanovic and Salah teamed up on him on the right flank but the Serb's poor crossing invariably let him off the hook. Unleashed the low shot which forced Schwarzer's mistake for Wickham's goal.
Calm in possession despite some fierce pressing from the home side and held his own in the air.
Has endured a torrid time since his arrival at the Stadium of Light but overcame a shaky start here to enjoy a modestly impressive afternoon.
Stood firm in the face of increasing Chelsea pressure, even if he did pick up a slightly harsh booking for a foul on Ba.
Did his job, which was to hassle, harry and foul Chelsea whenever the situation required it. He embraced the role of pantomime villain - notably when brazenly hauling back Oscar - and carried it out perfectly.
A peripheral influence. Rarely managed to isolate Azpilicueta and when he did, the Spaniard got the better of him. Pressed the ball well though.
Battled well in midfield and his set-piece deliveries were dangerous all afternoon - not least the clever clipped ball to Alonso on the edge of the box which led to Wickham's equaliser.
Showed great industry and discipline to disrupt Chelsea's midfield rhythm and shielded his defence well, even if he wasn't a great influence going forward.
Looks a confident man after his Etihad Stadium exploits and reacted well to tuck away the rebound from Alonso's low shot.
On the margins in open play but when his moment came to plunge the dagger into the heart of his former club, he took it coolly from 12 yards.
Came on in place of Salah on 66 minutes but could not replicate his PSG heroics. Stung the palms of Mannone with one fierce drive.
Replaced Eto'o on 74 minutes but despite showing great enthusiasm, failed to seriously extend Mannone.
Replaced Oscar on the hour mark and missed a very presentable opportunity soon afterwards.