SKIPPER Danny Riordan scored a hat-trick of tries as Old Belvedere secured an extraordinary 44-13 victory over Cork Constitution at Anglesea Road.
It was the shock of the season as Old Belvedere outscored their opponents by six tries to one.
Cork Con – who had beaten Young Munster, league leaders Lansdowne and Dolphin in their previous three outings – were ouplayed by the home team, who have now won three in a row and moved ahead of their visitors in the table.
In contrast to their inspired hosts, Cork Con could do nothing right, and could have no complaints about the scoreline.
Belvo coach Andy Dunne was keeping his feet on the ground afterwards, saying: "Cork Con had an off-day, they are far better than that.
"But you can only play what is in front of you and we are obviously delighted. Some of our tries were really excellent."
If full-back Riordan was the main contributor, some of the younger members of the team weren't far behind, notably flanker Jack Conan and out-half Steve Crosbie.
Old Belvedere led 8-6 at the interval, despite playing into the breeze and having prop Pat O'Regan sin-binned, and they put the game to bed in the opening 20 minutes after the interval.
Riordan, who scored the only try of the first half, added two more, and flanker Kieran O'Gorman got another.
Cork Con did manage to reduce the margin to 30-13 with a try from scrum-half Gerry Hurley, which was converted by Johnny Holland, but it was Old Belvedere who finished the stronger.
Conan and Josh Eden-Whaitiri added further tries, with the accurate Josh Glynn converting both.