Queen's left full of regret, while Rainey move in right direction
Losing 17-15 at home to Cashel was a difficult one for Queen's University to take.
Rugby round up Newsletter
Not only did this first defeat remove them from being top of the 2A table, after having banked three straight wins, but it was also inescapable that this was a game they should never have lost.
Queen's - who are now in third - had played all the rugby and had enjoyed more than enough possession and territory to see their very one-dimensional visitors off the premises.
Yet the students simply weren't able to turn all their admirable skill, effort and endeavour towards making the scoreboard move with regularity.
They could also feel rather aggrieved at surrendering two penalty tries - at the start via a crumpling scrum and, somewhat controversially, at the end of the game from a line-out maul - while in between times scored themselves through Curtis Pollock and the excellent Ethan McIlroy.
Indeed, McIlroy, prior to his own 77th-minute score, came close to creating a stunning try from a slaloming run through the Cashel defence only for his off-load to go forward.
Such was the students' dominance that it was hard to believe that they hadn't put daylight between themselves and Cashel and that, ultimately, was their undoing.
Also in 2A, Rainey Old Boys defeated bottom side Dolphin 27-9 and moved up a place to second with two tries from Mickey O'Neill and individual scores from Ronan McCusker and Andy Magrath bringing them the bonus point.
Meanwhile, Ballymena claimed a first win after beating UL Bohemians 24-21.
In 2B, Belfast Harlequins lost 14-8 at leaders Greystones - Richie McKee getting a try along with Coby Miln's penalty - but took a losing bonus point, while Dungannon did the same after being beaten 14-10 at Sligo.
There were also no Ulster winners in 2C and all three clubs now make up the bottom part of the table.
Omagh lost 27-7 at home to leaders Enniscorthy, the home side's only points arriving via a penalty try, while City of Derry were beaten 27-13 at former basement side Sundays Well.
Derry scored two tries from Thomas Cole and Callum O'Hagan.
Bangor are now propping it all up following their 17-9 loss at Bruff, Oscar Yandall and Mark Widdowson kicking all the visitors' points.
2A: Ballymena 24 UL Bohemians 21, Queen's University 15 Cashel 17, Rainey 27 Dolphin 9.
2B: Greystones 14 Belfast Harlequins 8, Sligo 14 Dungannon 10.
2C: Bruff 17 Bangor 9, Omagh 7 Enniscorthy 27, Sundays Well 27 City of Derry 13.