A game Leeds will need to win if they are to be certain of heading into the last game with their destiny in their own hands.
It would take a bizarre set of circumstances for Charlton to clinch second spot but the game is equally important to them.
With sixth placed Huddersfield just a point behind with two winnable games to come, Charlton could easily find themselves facing Millwall or Leeds again in the initial stages of the play-offs.
Back in 1996 an unlikely Millwall draw at Ipswich was not enough to keep the Lions up, but did allow Charlton to make the play-offs, where they succumbed to Crystal Palace. Lions fans will be hoping Charlton can return the favour.
Charlton Athletic Team News:
Jonjo Shlvey has left the club although he will not officially become a Liverpool player until 10 May. Sam Sodje looks to be winning his fitness battle and the Addicks could be unchanged.
Player to watch: Kyel Reid
Leeds United Team News:
Leeds have been in indifferent form since their stunning FA Cup victory at Old Trafford. Seemingly guaranteed the title at turn of the year, they now have a major fight on their hands to avoid the lottery of the play-offs.
Jermaine Beckford has been relegated to the bench recently with Arsenal loanee Sanchez Watt partnering Becchio up front.
Robert Snodgrass will pose a threat from the flank.
Player to watch: Robert Snodgrass
Match Facts & Stats
Premiership referee Lee Probert will be the man in charge.