Ballynahinch demolished lowly Blackrock College in a 52-19 success as they stormed to the top of the Division 1B standings.
‘Hinch tallied up eight tries, half of them scored by excellent winger Chris Quinn, as they put the hosts to the sword at Stradbrook.
The victory was a timely one as it moves the County Down side into pole position as previously unbeaten Malone slipped up at home to UCD.
Missing the Ulster-tied Niall O'Connor and Robbie Diack, Malone fell to an 18-15 loss at Gibson Park, the decisive score being a late penalty from UCD replacement out-half Niall Earls.
The students also outscored Malone by three tries to two - big winger Barry Daly bagged his fourth of the season, while Malone captain Glenn Moore made it five in four games.
Elsewhere, Ireland Under-20 international Cathal Marsh kicked four penalties to guide Dublin University to 12-6 victory over Bruff at Kilballyowen Park.
Neither side could muster a try in a game played in a gale force wind with heavy rain. Marsh landed three successful kicks to give Trinity a 9-0 interval lead.
Bruff were by no means out of contention and when Brian Carroll found his range with a place-kick, they were beginning to put some phases together in attack.
A fourth clean strike from Marsh edged the visitors over the finish line, although Carroll doubled his tally to make sure Bruff gained a losing bonus point.
Centre Alex Hayman scored a try in each half as Buccaneers got back to winning ways in head coach Hendre Marnitz’s last game before his return home to South Africa.
Marnitz is taking up a coaching position with Super 15 outfit the Bulls, but Buccs gave him a winning send-off in Ballymena as they beat the Braidmen 17-13.
Meanwhile, in a cracking Ulster derby, Belfast Harlequins came from behind to take the spoils against Dungannon at Stevenson Park.
‘Quins made it two wins on the trot with a 23-13 triumph, despite a superb start from the hosts which included a converted try from right winger Mark Faloon.
‘Gannon moved 13-0 ahead but the visitors took over after that, scoring tries through Stuart Olding and Michael Ferguson with Ulster scrum half Michael Heaney kicking well - he landed two conversions and three penalties for a 13-point haul.