Nathan Jones' side earned a valuable point against Millwall on the weekend, maintaining their place in the play-off spots, whilst the Posh had a tough afternoon at home to Middlesbrough - losing 4-0.
The opposition:
Peterborough are bottom of the league and currently eight points away from safety with one win in their last five matches.
Jonson Clarke-Harris is the threat for the home side, and will look to add to his nine goals on Tuesday night.
Last time we met:
Fred Onyedinma was the star of the show on the opening day of the season after scoring and providing two assists in a brilliant 3-0 win at Kenilworth Road.
Highlights can be found via our YouTube channel below...
Follow the action:
Supporters can purchase a £10 match pass to watch the game live from the Weston Homes Stadium if unable to attend the fixture.
Alternatively, you can tune into Simon Pitts' match commentary with an audio pass.
Ref watch
Referee: Thomas Bramall
Assistant Referees: Robert Merchant and Nick Greenhalgh
Fourth Official: Oliver Langford
The man in the middle on Tuesday night is Thomas Bramall. He most recently took charge of Luton's 1-1 draw against Fulham back in December.
Bramall has officiated 27 matches in total this term, dishing out 82 yellow cards and five reds in the process.