Queen’s must win their last game of the season and hope that rivals Old Wesley slip up if they are to gain promotion to Division Two.
The students are fourth after a 15-7 defeat at Corinthians, which confirmed the Galway side’s promotion as champions.
Queen’s are a point behind Midleton and Old Wesley going into the final day.
All three can still take the second promotion spot but Queen’s host Midleton at the Dub while the Dubliners entertain Sundays Well, who are fighting to avoid the relegation play off.
Queen’s could be left to rue not taking a bonus point after they rallied from 8-0 down to close the gap to a point with a converted try from second row Andrew Linton.
Home flanker Sean Gerrity won it with a converted touch down 14 minutes from the end.
Banbridge have virtually guaranteed their senior status with a 20-13 comeback win over Nenagh at Rifle Park.
Bann move up to 14th, four points ahead of Sundays Well, but have the luxury of their final game away at already relegated Waterpark who have lost all 14 games and conceded 693 points.
Simon Kinstry’s try meant Bann trailed 13-5 at the break, but tries from Richard Finlay and Andy Brown were enough for victory.
Ards moved into the top half of the table with a hard fought 22-23 derby win over Portadown at Chambers Park.
In an exciting game Tom Overy’s try put the home side in front with 10 minutes remaining, but a Michael Lawton penalty and David Armstrong try gave Ards the points.