Nikki Coates retained the Davy Wood Memorial Trophy at Bishopscourt on Saturday.
Coates had to settle for second place in the first leg behind Robert English (IFS Triumph), who won by two-and-a-half seconds, with Jason Lynn third on the Walter Bell Suzuki.
Coates, though, responded on the Kingsbury Packaging Kawasaki to clinch the honours in race two, sealing a narrow victory over English by 0.4 seconds to secure the trophy after clocking the fastest lap of the day at 96.238mph in race one.
Jamie Patterson rounded out the podium places on the RPM Performance Suzuki at the expense of Lynn.
Tyco BMW’s Alastair Seeley rattled off a double in the Superbike class to win the Joe Lindsay Cup.
The Carrick man, who used the event to stay sharp on a free weekend for the National Superstock 1000 Championship, won the first race on his Superstock machine by four seconds from Irish Superbike title contender Alistair Kirk (McCurry Kawasaki), with Ryan Rainey third on the IFS Yamaha, a further two seconds back.
Coates claimed fourth place on his 600cc Kawasaki, only 0.5 seconds behind Rainey.
In race two, Seeley extended his winning margin to 5.4 seconds over Rainey, who took the runner-up spot by seven seconds from Kirk.
With one round of the ISB Championship remaining at the Sunflower Trophy meeting next month, Rainey holds a slender one-point advantage over Kirk at the top of the table.