Finishing third on the stage was Andrea Peron (Team Novo Nordisk). Ewan now leads Bevin by eight seconds on the general classification, with team-mate Adam Blythe (ORICA-GreenEDGE) third at 34 seconds
Throughout the 175km rain-dampened stage, the Oceania teams or Orica-GreenEDGE, Drapac and Avanti Racing played it cool, allowing a four-rider break to hover off the front for the majority of the stage before clamping down at the foot of the final climb 6.9km from the finish.
The category three rise failed to animate the stage, and it was once again a test of fast-twitch superiority for the sprinters, with Ewan, beating Bevin by half a wheel.
"All day from the start I felt not as good as I have for the past few days" Ewan said. "I never felt comfortable.
"I was a bit worried going into that final climb. The guys said to me the only person I had to worry about following was Paddy Bevin, so I did that and, whenever he moved, I moved with him and it really took a lot out of me.
"We're not going to ride for the (leader's) jersey, we're going to try to race and control it to get stage wins. We'll keep going for stage wins and, if the yellow jersey comes with it, then that's a massive bonus.
"As a sprinter, there aren't many opportunities you get to win a race overall so, not just because I have close ties to Korea, but just in general, it would be really nice to win an overall classification."
With just a sing category 3 climb in the first 25km, the 193km 6th stage is also expected to finish in a bunch sprint.