They don't come much bigger than this for Sunderland this season.
After losing ground in the League One promotion race following the 1-1 draw at Peterborough on Monday, the Black Cats know they must beat Portsmouth at the Stadium of Light on Saturday to stay in the hunt for an automatic promotion spot.
If Barnsley beat Blackpool and the Black Cats lose, then it's play-offs for certain, but Jack Ross and Co can keep themselves in the hunt with three previous points.
Here's all you need to know.
What time does Sunderland vs Portsmouth kick off?
The action gets under way at 3m on Saturday, April 27. It is one of a full bill of League One fixtures taking place Saturday.
Is Sunderland vs Portsmouth on TV? How can I follow it live?
No, this one is not on TV. However, you will still be able to follow the action with ChronicleLive on our matchday live blog .
We’ll be bringing you all the pre-match talk, live match commentary and any post-match reaction and analysis.
What are the injury concerns? Who is in the teams?
Sunderland are set to be without left-back Bryan Oviedo after he picked up a knock at Peterborough, with Denver Hume likely to come into the side. Chris Maguire made his first appearance since recovering from a broken leg at the ABAX Stadium and could come into the starting line-up.
Sunderland likely XI: McLaughlin; O'Nien, Ozturk, Dunne, Hume; Power, Cattermole, Morgan, Honeyman, McGeady, Wyke.
Portsmouth likely XI: MacGillivray; Brown, Clarke, Burgess, Thompson; Naylor, Lowe, Evans, Curtis, Close; Pitman.
Who is the ref?
TBC
What are the bookies saying?
Sunderland 11/10
Portsmouth 12/5
Draw 12/5
League One table
Here's how it stands.
League One form table
Here's the last-10-games table.
