A Leo Auva'a injury-time try secured a home semi-final game for Belvo. The home side started the brightest, with a 25-metre penalty from out-half Conal Keane opening the scoring after four minutes.
Old Belvedere responded with their first try on 19 minutes through full-back Danny Riordan, with Keane providing the conversion.
Further tries followed for Belvedere, though Mary's did finish the half well with an excellent individual try by out-half Ian McKinley, which Gavin Dunne converted.
Belvedere suffered a set-back when scrum-half Simon Keogh was yellow-carded, but Mary's No 9 David Campbell was also cautioned, which paved the way for Auva'a's winning try.
Scorers -- Old Belvedere: D Riordan, D Mongan, E Devitt, L Auva'a tries, C Keane pen, con. St Mary's College: I McKinley 2 tries, con, R Sweeney try, G Dunne con.
Cork Constitution 33 Blackrock College 16
Cork Con finished top after this win at Temple Hill. There was a flurry of scores early on, with Simon Zebo waltzing through the Blackrock defence to put the home side ahead after two minutes; Gerry Hurley converting.
Within six minutes, Blackrock took the lead. Darragh Fitzpatrick kicked a penalty and Alex Dunlop scored a try. Hurley kicked three penalties in the opening minutes to put Con in control, with Sean Scanlon and Duncan Williams adding further tries.
Scorers -- Cork Con: S Zebo, S Scanlon, D Williams tries, G Hurley 3 cons, 4 pens. Blackrock College: A Dunlop, M Carroll tries, D Fitzpatrick 2 pens.
Young Munster 23
Two major dust-ups, which saw a player from each side sin-binned, indicated the intensity at Clifford Park.
Declan Cusack had Garryowen 12-0 in front at half- time. Young Munster were transformed in the second half, with Alan Kinglsey doing well. Cusack landed another Garryowen penalty, but a try by Matthew Costelloe, and a Willie Staunton drop goal, saw the home side win.
Scorers -- Young Munster: C O'Hanlon, M Costelloe, try each, A Kingsley 2 pens, 2 cons, W Staunton dgl. Garryowen: D Cusack 5 pens 1 dgl.
Shannon were impressive at Coonagh and powered into a 21-6 interval lead. Barry Keeshan kicked a ninth-minute penalty for the Cork side, but a try by Gareth Quinn-McDonagh, converted by Mossie Lawler, had Shannon on their way.
Dave Quinlan and Luke O'Dea had further Shannon tries, both of which Lawler converted. Marcus O'Driscoll had Shannon's bonus-winning try, which Lawler converted.
Scorers -- Shannon: G Quinn-McDonagh, D Quinlan, L O'Dea, M O'Driscoll, try each, M Lawler 4 cons. Dolphin: D Barnes, E Moloney try each, B Keeshan, 2 pens 1 con.
Lansdowne earned themselves promotion on the Aviva's back pitch after this bruiser. Kevin Quinlan broke the deadlock for the home side after the break with a penalty and after crashing over himself, he converted Eamon Sheridan's last-gasp try.
Scorers -- Lansdowne: K Quinlan try, pen, con; E Sheridan try.
UL Bohemian 18
Liam Bibo crossed for a hat-trick of tries as Galwegians defeated UL Bohemian and survived the drop at Crowley Park. With the score 23-13 at the break, Cian Aherne closed the gap to five soon after with his second try of the game, but Bibo completed his hat-trick with tries in the 49th and 57th minutes to clinch Wegians' spot in the division.
Scorers -- Galwegians: Bibo (3), Murphy tries, Leader 3 pens, Leader 4 cons. UL Bohemian: Aherne (2) tries, Hanrahan (2) pens, Hanrahan con.
Bruff finished best against Clontarf at Kilballyowen in a game that was tight until the visitors' Martin Garvey was sent off after 50 minutes.
Just on half-time Tony Cahill landed a Bruff penalty to add to his conversion of Alan Bourke's try. Martin Dufficy landed a second penalty but a John Carroll try clinched the win for Bruff.
Scorers -- Bruff: A Bourke, J Carroll, try each, T Cahill, 1 pen 2 cons. Clontarf: M Garvey try, M Dufficy 2 pens.
THERE were plenty of celebrations at Stevenson Park as UCC moved out of the relegation zone.
The Cork side took an early lead with a Gavin Duffy try, converted by Johnny Holland, before Michael Lawton replied with two penalties as the visitors took over.
Scorers -- Dungannon: C Gaston 1 try, M Lawton 2 pens. UCC: J Ryan 2 tries, G Duffy try, C Crawley try, J Holland 1 try, 1 pen, 2 cons.
Sunday Indo Sport