Lansdowne make it nine victories in a row at UCD
Lansdowne completed an immaculate first half of the Ulster Bank League season with their ninth straight win, as three tries after the break saw them overcome UCD 30-23 at the Belfield Bowl.
The Division 1A leaders also lifted the Sutherland Cup, which is in memory of Peter Sutherland's father, the great Billy Sutherland. As well as a penalty try from a scrum, Harry Brennan and Ronan Kelleher both touched down.
Harry Byrne (eight points) and Jack Ringrose (try) got on the scoresheet for UCD, who battled back for a losing bonus point thanks to a closing try from Tommy O'Brien.
Clontarf outscored Dublin University by four tries to three, including a seventh of the season from centre Matt D'Arcy, but were left clinging on for a 29-24 win at Castle Avenue.
Although Clontarf led 22-10 heading into the second-half, they were left sweating at the finish as poor discipline saw two players sin-binned and captain Ben Reilly also saw red after clashing with Trinity's Darragh Higgins.
Captain Neil Cronin, with 14 points, and two-try full-back David Johnston were the scoring stars for Garryowen in their 24-17 Munster derby success against Cork Constitution at Dooradoyle.
Buccaneers came from 10 points down to edge out St Mary's College 11-10 at Templeville Road. First-half tries from Adam Coyle and Conor Dean were cancelled out by a John Sutton effort and two Luke Carty penalties.
Terenure's back-three of Sam Coghlan Murray, Jake Swaine and James O'Donoghue all touched down in their 32-13 bonus-point success at home to Young Munster.
Ballynahinch dished out a 42-15 beating to Shannon as they replaced the Limerick men at the top of Division 1B. Leading 14-8 at the break, the hosts dominated the second-half, with full-back Conor Kelly scoring two of their six converted tries.
It was a terrific day for the division's Ulster clubs, with Ballymena and Banbridge enjoying bonus-point wins at home. Angus Kernohan and Rodger McBurney (two) notched three tries between them as the Braidmen ended their three-match losing streak with a 25-16 dismissal of Old Belvedere.
Robert Lyttle and Andrew Morrison bagged a brace each in Banbridge's 26-25 triumph over Dolphin, while at Forenaughts, Fionn Higgins pounced on Johne Murphy's kick to touch down and steer Naas past Old Wesley, 30-25.
Hosts UL Bohemians lost their grip on a 12-3 first-half lead as Brian Walsh's UCC took the spoils, 22-15. Kevin Slater had a key contribution with two tries, including a 67th-minute length-of-the-field score.