League sponsors Sky Bet have Rovers priced at 13/10 to beat Charlton Athletic in the League One play-off semi-final first leg on Sunday at the Keepmoat Stadium.
Rovers play the Addicks for the fourth time in all competitions this season, with one win, one draw and a defeat so far for Grant McCann's men, and for Rovers to win and both teams to score, Sky Bet have that priced up at 5/1.
The draw is 21/10, with a Charlton win also priced at 21/10.