Rovers returned from Roots Hall with a hard-earned 0-0 draw after the first leg of their play-off semi-final, but O'Driscoll insists the tie is not yet over.
He said after the stalemate: "They're a good side and it will be a difficult game at home. I can't say that we're favourites just because we've drawn the first leg.
"It's only half-time and the job is only half-done."