Three Rock and Pembroke probably got the result their performances deserved but the real winner from this tie was Glenanne, who jump above the pair into top spot.
Like their previous league match-up this term, Rovers had the guts of the possession while Pembroke had the clearer chances. From Pembroke's fourth corner, Alan Sothern quite brilliantly opened the deadlock. He dummied a drag, pulled the ball onto his reverse and banged in from 12 yards.
David Harte pulled off a fine double-save from Peter Blakeney and Michael Maguire in the second half while Neil Lyons took Paddy Conlon's weak effort off the line. Mitch Darling and Blakeney should have done better with a two-on-one but Tim Lewis got back with a sliding interception while Rovers seemed to fire a lot of aimless crash-balls into the circle with no one around to deflect in.
Sothern was a constant thorn, one reverse cross going untouched and almost rounding Charlie Henderson. That chance saw the ball bounce off Lyons' foot but advantage was played and two Pembroke forwards got in each others way.
Darling won a contested corner eight minutes from the end and Peter McConnell slid in a corner that squirmed through David Harte via a slight deflection for 1-1. Rovers had the better chances to win, especially as Pembroke lost discipline.
Their complaints saw a free overturned, a free-in upgraded to a late corner - the aftermath seeing Tim Lewis sin-binned. Justin Sherriff also saw yellow in the last minute for a foul on Andy McConnell.
Glenanne 6 (Eddie O'Malley, Shane O'Donoghue, David Keogh, Gary Shaw, Joe Brennan, Stephen Butler) Railway Union 0
The Glens made it to the top of division one with an easy win over Railway, with the midfield of Stephen Butler, Graham Shaw and Brendan Parsons overwhelming the visitors.
Kevin O'Brien went off early with a facial injury and his side could not reproduce their prior efforts in pushing the Glens close earlier this season. Butler played in neither of those games but his return sparked the win in a low-key game.
YMCA 2 (Andy Walker, Jacob Webber) Corinthian 5 (Brian Doherty, John McInroy, Miles Warren, Andrew Sutton, Glen Holmes)
A lively encounter was sealed by Corinthian's three goals in the last ten minutes - with one in response from YM - as they pulled away in the latter stages. YM took the lead early from the penalty spot but the reds countered to take a 2-1 lead.
They forged further ahead to 4-1 late on with YM pulling one back from a stroke once again before Corinthian completed the scoring. Will Powderly was sin-binned while Alan Blennerhassett picked up a nasty looking head injury.