Rovers are 3/4 to reach the fifth round of the Emirates FA Cup with title partners Sky Bet.
Rovers beat Preston North End 3-1 in the third round and for the team to repeat that score line on Saturday is 12/1.
Alfie May is joint top scorer in the FA Cup with four goals and he is 9/5 to add to his tally against Oldham.
A draw is 11/4 while a win for Oldham Athletic is 18/5.
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