Late tries from Leo Auva'a and David Mongan ensured Old Belvedere recorded another encouraging victory at Anglesea Road.
In a well-contested encounter, Old Belvedere shaded the opening period after Conall Keane and Garryowen's Declan Cusack had traded penalties.
In the 24th minute Eddie Devitt crossed for an Old Belvedere try and Keane added the extras to leave the home side 10-3 ahead at the interval. There was no shortage of grit and determination after the restart, but Belvedere finished with a flourish to secure the spoils.
A'uvaa and Mongan went over for tries in the final stages, with Andy Dunne knocking over two conversions as the Dubliners closed the deal.
Scorers -- Old Belvedere: E Devitt, L Auva'a, D Mongan try each, C Keane pen, con, A Dunne 2 cons. Garryowen: D Cusack pen
Cork Constitution 22
St Mary's College 17
Cork Constitution got back to winning ways after a deserved win over third-placed St Mary's College at Temple Hill.
In a closely-fought opening half, Gerry Hurley put the home side ahead with a penalty after 16 minutes, but Gavin Dunne had the visitors level with a penalty nine minutes before the break. Hurley made it 6-3 at half-time with his second penalty.
Dunne levelled six minutes into the second half, but a great solo try by Frank Cogan restored Con's lead and Hurley converted.
Dunne and Hurley exchanged penalties before Matt Darcy got in for a try for the Dublin side.
Two further penalties by Hurley put Con in control, but a penalty by Dunne in the last minute earned his side a losing bonus point.
Scorers -- Cork Constitution: F Cogan try, G Hurley 5 pens, con. St Mary's College: M Darcy try, G Dunne 4 pens.
Cork Constitution: S Scanlon; S Zebo, C Healy, I Dineen, C Jouve; S Deasy, G Hurley; M Gately, M O'Leary,S Archer ;B Hayes, C O'Flaherty; B Holland, J Cutriss, F Cogan
St. Mary's College: G Dunne; P Gillespie, S Grissling, M Sexton, D Hudson; I McKinley, C Campbell; C McMahon, R Sweeney, J McGrath; C Ruddock, S Bradshaw; D Hall, P Nash, H Hogan
Referee: G Clancy
Blackrock College 20
Shannon turned on the style at Coonagh to beat Blackrock by double scores.
Outhalf Tadg Bennett was man of the match for the winners and he contributed 18 of their points with a try, five conversions and a penalty.
In all, Shannon scored five tries, which gave them a badly needed bonus, and Bennett got the first of the tries after 17 minutes which he converted from the touchline after Rob Keogh had opened the scoring with a try.
Paul Rowley had Shannon's second try after 25 minutes, which Bennett again converted.
Blackrock hit back with a try by Brendan Macken, which Keogh converted to leave only two points between them. Just on half-time Les Hogan had Shannon's third try which Bennett again converted and when he had another penalty three minutes into the second half, it set the trend for a comfortable win for the home side.
Tries followed by Colm McMahon and Maurice O'Driscoll after Barry Kelly had a 'Rock try.
Scorers -- Shannon: T Bennett try, pen, 5 cons; P Rowley, L Hogan, C McMahon, M O'Driscoll, try each.
Blackrock College: R Keogh try, pen, con; B Macken, B Kelly try each.
Young Munster 35
Christmas came late for Young Munster who had a comfortable bonus-point win over Dolphin at Clifford Park.
In front 23-0 at the interval, Young Munster had first-half tries by Mark Doyle and Matt Costelloe with man of the match Alan Kingsley converting both and he also landed three penalties.
Young Munster wrapped it up when James O'Neill got in after Kingsley was tackled just short of the line and two minutes from the end referee Alain Rolland lost patience with Dolphin repeatedly bringing down scrums and awarded a penalty try.
This time Willie Staunton tapped over the conversion.
Scorers -- Young Munster: M Doyle, M Costelloe, J O'Neill try each, penalty try, A Kingsley 3 pens, 2 cons, W Staunton 1 con
UL Bohemian 12
A superb display by second row Ben Gissing was pivitol in Clontarf's win against UL Bohemian at Annacotty.
The visitors led 10-9 at the interval and had scored their remaining points before the home side had a fourth penalty by JJ Hanrahan. Clontarf had an early try by Michael Keating and they lost outhalf Noel Reid through an early injury.
He was replaced by Martin Dufficy, who converted the try and also kicked three penalties in what was a somewhat disappointing contest.
Scorers -- UL Bohemian: JJ Hanrahan 4 pens; Clontarf: M Keating try, M Dufficy, 3 pens, con
Lansdowne had too much firepower for a determined Bruff side as they registered an impressive victory on the artificial surface back pitch at Lansdowne Road in front of a sizeable crowd.
Bruff struck first with a try on 10 minutes from scrum-half Eoin Maher, converted by Brian Cahill. Lansdowne hit back right away as No 8 Ron Boucher went over and Eoghan Hickey converted.
Further tries from Eoin Sheriff and Hickey, as well as two penalties from Hickey, sent the home side in leading 25-12, with prop Gearoid Ryan going over for Bruff.
Dave Hewitt extended Lansdowne's lead with a try on 50 minutes, and although Bruff came back into the game with two penalties from Cahill, it was not enough to earn them a result.
Scorers -- Lansdowne: R Boucher, E Sheriff, E Hickey, D Hewitt tries; E Hickey 2 pens, 2 cons Bruff: E Maher, G Ryan tries; B Cahill 2 pens, con.
Lansdowne: D Hewitt; D Kearney, K Lewis, G Stafford, M Healy; E Hickey, J Cooney; J Lyne, T Sexton, J O'Connell, N Keogh, E Sheriff, S Keogh, J Murphy, R Boucher.
Bruff: B Deady; J Moore, A Cashman, B Cahill, P O'Brien; T Cahill, E Maher; D Horan, C O'Regan, G Ryan, D Murnane, M O'Connell, A Bourke, J Shine, P Malone.
Referee: M Hermin
Dungannon v Buccaneers -- off
Sunday Indo Sport