Full-backs Nedum Onuoha and Armand Traore are doubtful due to hamstring injuries.
Park Ji-sung (knee) is another player sidelined, while strikers Andrew Johnson (knee) and Bobby Zamora (hip) remain absent.
The midfielder was unavailable for the weekend home win over Norwich after incurring five bookings this season.
Baggies boss Steve Clarke will check on the fitness of defender Steven Reid (ankle) and midfielder Claudio Yacob (hamstring) before finalising his side.
QPR: Green, Cesar, Murphy, Cerny, Onuoha, Hill, Nelsen, Ferdinand, Mbia, Fabio, Traore, Derry, Diakite, Granero, Taarabt, Hoilett, Faurlin, Wright-Phillips, Ephraim, Mackie, Cisse.
West Brom: Foster, Myhill, Daniels, Jones, Reid, McAuley, Olsson, Tamas, Dawson, Ridgewell, Popov, Mulumbu, Yacob, Dorrans, Brunt, Morrison, Gera, Odemwingie, Fortune, Long, Lukaku, Rosenberg.