Kilmarnock manager Jim Jefferies has doubts over Simon Ford and Ryan O'Leary ahead of their Clydesdale Bank Premier League game against Hearts.
Ford suffered a hamstring injury during last week's defeat to St Mirren, while O'Leary has picked up an ankle knock in training.
Craig Bryson, Willie Gibson, Alan Morgan and Frazer Wright are all still out of action.
Hearts interim manager Stevie Frail is set to leave out captain Christophe Berra as the defender is just one booking away from a two-game suspension for next term.
Marius Zaliukas is poised to step in.
Winger Saulius Mikoliunas is out after returning to Lithuania for the birth of his child, while Robbie Neilson (pelvic complaint), Christian Nade (head) and Andrew Driver (thigh) are also set to be missing.
Frail will give teenager Gary Glen every chance to shake off the calf injury sustained at Falkirk on Monday.
Squads:
Hearts: Banks, Ridgers, Thomson, Zaliukas, Goncalves, Karipidis, Kingston, Jonsson, Wallace, Stewart, Screpis, McGowan, Elliot, Cesnauskis, Palazuelos, Glen, Mole, Rapnik.
Kilmarnock: Combe, Fowler, Lilley, Ford, O'Leary, Hay, Flannigan, Taouil, Johnston, Wales, Murray, Hamill, Fernandez, Invincibile, Rascle, Locke, Di Giacomo, Dalglish.