QPR 1-2 West Brom
Dean Kiely saved a second-half penalty and Zoltan Gera netted a late winner to boost West Brom's promotion hopes.
Kevin Phillips broke the deadlock three minutes after the restart with a clinical finish before substitute Dexter Blackstock headed a leveller.
Kiely fouled Paul Furlong but made amends by saving his spot-kick.
Nathan Ellington then produced an inch-perfect left-wing cross and Gera steered a six-yard volley past Camp to clinch all three points.
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QPR: Camp, Mancienne, Stewart, Cullip, Bignot, Ainsworth (Ricketts 83), Idiakez (Lomas 14), Bolder, Cook, Furlong, Nygaard (Blackstock 61).
Subs Not Used: Cole, Kanyuka.
Booked: Blackstock, Ainsworth, Camp.
Goals: Blackstock 63.
West Brom: Kiely, McShane, Clement, Sodje, Robinson, Koren, Greening, Carter (Ellington 46), Koumas, Kamara (Chaplow 85), Phillips (Gera 77).
Subs Not Used: Daniels, Albrechtsen.
Booked: Gera.
Goals: Phillips 48, Gera 84.
Att: 14,784.
Ref: P Armstrong (Berkshire).