Playing effectively on the break will be key to winning in South Wales, but so will a strong defensive effort to match the one seen in the FA Cup at the weekend.
It’s a 3-5-2 formation for me.
Jack Taylor and Harrison Burrows have been ruled out because of injury.
5. RONNIE EDWARDS
He's getting better at dealing with the physical strength of Championship forwards. Anyway he has big players either side of him and he will be vital as Posh seek to keep possession.
6. MARK BEEVERS
He got better as the game wore on at the weekend and he played very well in the home game against Cardiff until he limped off. Posh struggled without his ability to cope with Cardiff's aerial threat. He's the left-sided centre-back.
7. OLIVER NORBURN
The midfielder answered any questions about his commitment after a failed attempt to get away from the club with a decent performance against QPR. Posh will need his battling qualities against a physical home side.
8. REECE BROWN
I liked the way Brown kept the ball and passed it positively against QPR. He should start and his ability to feed the wing-backs or two quick strikers will be key. I'm giving Poku a breather after three tough games in a row.