Ryan Farquhar had a successful outing at Scarborough's Oliver's Mount circuit at the weekend taking four wins.
The Northern Irishman won the Classic Superbike Race, both rounds of the 400/Supertwins race and the feature Barry Sheene Trophy Race for Classic Superbikes.
Meanwhile in Ireland William Dunlop took four wins at the Skerries meeting in the 125, 250, 600 and Superbikes classes.
Farquhar still tops the Duke Road Race Rankings with Michael Dunlop second and William Dunlop third.
FC Isle of Man thrashed by ruthless Atherton
Ravens fall to joint-heaviest home defeat of season
FC Isle of Man to host in-form Atherton LR
Visitors currently on eight-match winning streak
Hockey: Cup semi-finals await this weekend
Places in April finals up for grabs in last-four phase
Rugby: Douglas' play-off quest to continue against Firwood Waterloo
Vagabonds Ladies to welcome Bury to Ballafletcher
Football: FA Cup & Woods Cup continue on busy weekend schedule
Northern showdown in top flight among league clashes