Did brilliantly to twice deny Lukaku when the Belgian was one-on-one, rushing sharply off his line and closing down the angles, could have done little to keep out the Belgian's header which was well placed and firmly hit.
Is effortless at times with his defending and did well to keep Lukaku quiet when the Belgian went up against him. Stamped his authority on the game early with two great interceptions and was solid throughout.
Gave the ball away in a sloppy fashion several times in the opening minutes but regained his composure and even tested Foster with a 30-yard effort that required a fine stop from the former England man.
Was routinely targeted by West Brom with balls over the top of him to test his lack of pace, but he regularly recovered well, is now considered Coloccini's first-choice partner and put in another good show.
Was given another Premier League start as he continues his recovery from injury and return to full fitness. Was rarely troubled by Dorrans but began to tire in the second half and was brought off for Cisse.
Sat deep in midfield and shielded the back four superbly, the one occasion that the former Nottingham Forest man was caught out of position, Gera took full advantage to assist Lukaku's goal.
What he lacks in creativity, he makes up in commitment and spirit, filled three separate positions well during the 90, doing exactly what was required of him in midfield or defense.
Played in an advanced midfield role but struggled to create much against the terrier-like Mulumbu, his growing frustration was in evidence mid-way through the second half as he snapped into Dorrans and was booked.
H. Ben Arfa
Was at his creative best in the first half, giving Tamas absolute hell down the left wing, but struggled in the second period as Alan Pardew moved him into several different positions, with none bringing the best out of him.
Was stationed on the right wing in a 4-2-3-1 system but drifted infield often, set up Ba's goal with a towering flick-on and worked gamely until he was replaced in the second half.
The Demba Ba of this time last year has returned in full so far this term. Missed a gilt-edged chance to open the scoring in the 11th minute but made no mistake when his next chance came, seizing upon MacAuley's ponderous play to smash home his seventh Premier League goal of the season.
Could have possibly done better for Ba's goal, but the Senegalese striker's shot was fierce, leaving Foster only able to parry the ball into the net. Was completely helpless for the late winner.
At fault for the game's opener, being only able to nod the ball up in the air, allowing Ba to slam home, and struggled against the forward's pace and power in a tough afternoon.
Completely failed to live with the pace and trickery of Ben Arfa down his flank in the first half and seem to almost accept that he would be beaten time and time again by the Frenchman, improved in the second period, using his physical dominance to better Ben Arfa and force him to the opposite wing.
Solid and unspectacular at left-back. Solid in defence and handled the threats of Gutierrez, Ben Arfa and Obertan well, but rarely ventured forward
Marshalled his defence well and is solely responsible for keeping the Baggies organised at the back. Beaten aerially by Ameobi and Ba on occasion but was by far the more impressive of West Brom's centre-backs.
Buzzed around midfield and linked play well, but his usual threat was restricted slightly by his deeper role in midfield.
Was positioned on the left flank rather than his usual central berth and never really managed to get into the game fully. Substituted in the second half, not long after being crunched by Yohan Cabaye.
Handled Cabaye's threat well throughout, shadowing the Frenchman and shutting his game down well. Looked to get forward when he could and contributed well to several attacks.
Cut a frustrated figure out on the right flank and didn't seem to have the pace or invention to get the better of the energetic Santon, or Gutierrez once the Argentine switched to left-back.
Should have grabbed a goal in the first half, spurning two one-on-one chances but made amends for his lack of composure 10 minutes after half-time, rising to meet Gera's cross and plant a header low past Krul.
Struggled to get into the game for large swathes with James Perch proving difficult to shake off. Managed to find himself in space on one occasion and took full advantage, floating a perfect cross for Lukaku to equalise.
Came on in the second period and showed his pace down the right but his delivery was often poor and killed any potential openings.
Replaced Simpson to prompt a tactical shuffle but failed to get a sniff of goal, until Ameobi's hopeful effort went in after being deflected by his back.
Introduced when Ba went off injured and seemed to float around without direction, rarely getting involved, before hitting a late effort that deflected in off Cisse.