Dunlop, who set a lap record in qualifying on his GSX-R600 machine, took a calculated victory, crossing the line nearly two tenths of a second ahead of the chasing pack.
He said, “I qualified on pole position, won the race and set the fastest lap, so there are no complaints from me.
“The wee 600 Suzuki is a great bike to ride. I was able to win my first-ever Supersport race at Tandragee and also set my fastest ever lap around here, so it sets us up well now for the North West 200.”
Sadly the event was marred by the death of Noel Murphy during the Junior Support race.
Team Manager Philip Neill commented, “It’s difficult to celebrate a victory in such sad circumstances and our thoughts are obviously with the family of Noel Murphy at this time.
“We’ve put a lot of work into William this past few weeks and the Tandragee Supersport victory is just reward to the whole team’s efforts, obviously including William who is settling in very well.
“It means we can now go into the North West 200 with some positive energy and I know that William is hungry for success at the Triangle this year on the Tyco Suzuki GSX-R machinery.”