Yoshimura Suzuki's Mat Mladin overcame inclement weather and an all-day rain delay to win Sunday's second AMA Superbike race at the Mid-Ohio Sports Car Course and complete a sweep of the weekend.

As had been the case on Saturday, team-mate and defending AMA Superbike champion Ben Spies followed Mladin home to retain a reduced advantage at the head of the championship standings.

Mladin repeated his getaway from race one to keep in touch with Spied at the start, moving from fourth to second early on, before homing in on the leader with a series of laps faster than anyone else could manage. The six-time champion defied tricky conditions, and a moment at turn six, to catch Spies unawares at the Carousel before powering away to victory.

"It was a good race, even though the track was a little sketchy after the rain," the Australian said, "If I had to retire tomorrow, then I'd be a happy person by being able to win races and do what I've done. I'm out there enjoying myself and racing a kid who's got a bright future ahead of him. To be able to do that, that's pretty good."

Spies admitted that, for the second day running, his 'veteran' team-mate had been the better all-round package.

"I gave it my all today, but we just didn't have what it took," he sighed, "After Mat got past me, we tried to rebound and be there, but we just didn't have it. It's going to be tough to get it turned around, but we had pretty good speed today. We made a mistake that was my fault, but the bottom line is that we're not getting it done right now.

"But VIR is coming up and I've had some good speed there in the past. We've still got the points lead, though it's not as big as we'd like it to be. If we're going to win the title, we have to win a couple races."

Monster Energy Kawasaki's Jamie Hacking came through to claim third on the improving ZX-10R, overcoming Jordan Suzuki's Aaron Yates, Jake Zemke and Miguel DuHamel. Yates picked up a repeat of Saturday's fourth place effort after holding off the closing Hondas of Zemke and DuHamel to the flag. Eric Bostrom, Roger Hayden, Tommy Hayden and MV Augusta rider Matt Lynn completed a top ten missing Jason DiSalvo, who quit on the warm-up after crashing in practice.