Dundalk lifted the League of Ireland Premier Division title last night by beating Bohemians 2-1.
This result means that second placed Cork City can't catch them.
But Cork - who still have a FAI Cup Final to look forward to - are in action tonight against Wexford Youths, who are six points behind Finn Harps.
If Wexford lose or draw, they will end their season in the relegation play-off win.
But if they beat Cork tonight, they will be three points behind Harps.
Wexford's final game is away to Sligo Rovers while Harps are at home to Bohemians.