just make sure you reset your pitching rotation. hopefully, your ace did not play the last game of the season (which, I think, he would have done if it was the same ace you had since game 1 and he pitched every 5 games).
Start your ace, Guidry, in game one and then look at the lefty/righty splits to see how the rest of your staff lines up against your opponents hitters.
My advice is to just have luck. My last two teams in teh playoffs did nothing in the playoffs but were dominant all season. I have not figued out how my hitters all have dropped so much in the playoffs.