Ballymena's AIB All-Ireland League campaign suffered a jolt when St Mary's scored a try in the seventh minute of injury-time to claim a 21-15 win in Dublin.

Tony D'Arcy's side had overturned an 11-point half-time deficit to lead 15-14 going into injury-time.

However, St Mary's then produced a breakaway which was finished off by hooker Matt Duggan crashing over for a match winning try which was converted by Barry Lynn.

With Ballymena fly-half Adam Larkin only managing one of his four first half kicks, St Mary's, having played with the wind, led 14-3 at the interval.

However, Matt McCullough and centre Matt Waterhouse scored second half tries and a conversion helped Ballymena edge into the lead.

In injury-time, Ballymena were camped in the St Mary's half but the Dublin team then produced the match-winning breakaway.

Andre Bester's team were beaten

The result was only Ballymena's second defeat of the campaign.

Belfast Harlequins also lost with Buccaneers claiming a 25-17 win at Deramore.

Buccaneers led 11-5 at half-time with Darren Barbour having scored Harlequins' try in the 34th minute.

The Connacht side's first half scores were a Darren Yapp penalty and two Lee Turner penalties.

Belfast Harlequins fought back in the second half to lead 17-11 with the home team's tries including an Andy Park effort which has been set-up by Ross Collins' 80 metre run.

But Conor Loughran's individual try restored Buccaneers' advantage and a mistake by Harlequins' centre Rhys Botha then enabled Colm Rigney to notch another try for the Galway side.

Ulster's other Division One team Dungannon had better luck with Andy Earl's side hammering bottom-placed Terenure 45-12.

Dungannon started without Irish fly-half David Humphreys who was asked by national coach Eddie O'Sullivan not to play in the match.

Fixtures

Divison One

Belfast Harlequins 17-25 Buccaneers
Clontarf 21-16 Garryowen
Cork Constitution 37-33 Blackrock College
Dungannon 45-12 Terenure College
Galwegians 20-6 UCD
Lansdowne 48-22 Co. Carlow
Shannon 33-16 U.L. Bohemian
St. Mary's College 21-15 Ballymena

Division Two

Ballynahinch 13-14 Barnhall
Bective Rangers 17-15 Young Munster
Malone 5-18 DLSP
Old Belvedere 15-13 Dolphin
Portadown 28-22 Greystones
Sundays Well 14-9 Dublin University
Thomond 15-14 Midleton
UCC 9-9 Old Crescent

Division Three

Ballina 3-17 Old Wesley
City of Derry P-P Banbrdge
Highfield 18-15 Wanderers
Instonians 29-0 Monkstown
Naas 32-13 Clonakilty
Queen's University 12-36 Waterpark
Skerries 18-13 Corinthians
Suttonians 19-12 Connemara