The Harps and Ballinakill are playing to protect their senior status.
One side will be relegated from Laois Senior Hurling by the end of tonight.
The Harps meet Ballinakill in this year's relegation final at O'Moore Park.
Results have gone against both sides through the campaign to lead to this evening.
Throw in is set for 7.15, Midlands 103 Commentator Pat O'Sullivan says it's going to be a closely fought encounter: