Guy Martin took the feature Superbike Race at the Ulster Grand Prix with Tyco Suzuki team-mate, Ramsey racer Conor Cummins, also making the podium in third place.
The Padgetts Honda of Gary Johnson was second.
Michael Dunlop was challenging Guy Martin hard but slid off at the hairpin on the penultimate lap.
However, he did win the opening Superstock Race, finishing four seconds ahead of veteran rider Ian Lougher.
Cummins led into the first corner but ended up in fifth - Dan Kneen was seventh.
Brother William took the honours in the first Supersport event with the result declared after three laps when the race was stopped by a red flag incident.
Bruce Anstey was second - Cummins was fourth and Dan Kneen eighth.
Ryan Farquhar took yet another Supertwin contest in a re-run to complete a North West 200, TT and Ulster treble. Ryan Kneen came fourth.
Davy Morgan claimed the 250cc honours.
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