First-team coach Martin Haag says Bath are in the grip of a "huge injury crisis".
However, he is refusing to use Bath's injury woes as an excuse and is demanding an improvement in attitude and performance following Friday night's no-show at Sixways.
Winger Tom Biggs broke his hand in the loss at Worcester, adding to a mounting list of backs sidelined by injury.
He joins Matt Carraro (thumb), Ben Williams (shoulder) and Matt Banahan (quadricep) on the sidelines.
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