Syers is struggling with an ankle injury while Woods has a thigh problem and both face a late fitness test.
Centre-half Jamie McCombe is fully fit following a back injury and a virus, and could be handed a starting role.
Winger Kyle Bennett should also be available despite admitting to a series of injections recently to help a troublesome knee problem.
Saunders has no other injury or suspension worries ahead of the clash at the Keepmoat Stadium.
Last weekend's draw at Swindon saw Rovers move joint top of npower League One with Tranmere as they extended their unbeaten league run to five matches.
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