The Aussie duo had to come from a break down in the third set after they had opened in near-flawless fashion, chalking up eight winners to two unforced errors in the first set.
Kubler said Polmans was unbelievable and “carried me today”.
“That’s the great thing about doubles – it’s the teamwork,” Kubler said. “Some days I won’t be feeling it, like today, and then Marcy really stepped up. I’m sure there will be other times when maybe Marcy doesn’t feel it as much and I’ve got to step up.”
Kubler showed no signs of being hampered by his bandaged left knee, which has undergone multiple operations, as he leapt skyward for a slam-dunk smash to conjure the first break of the match.
Two games later, the Queenslander unleashed back-to-back return winners on the ad side to clinch an insurance break, before holding for 5-1. Polmans clinically sealed the set when he held to love.
Kubler and Polmans struggled to find a first serve in the second set, landing just 9 of 23 as the momentum swung.
They also failed to capitalise on four break-point opportunities, while Johnson and Zielinski — the aggressors from the back of the court — broke with their sole opening, the energetic Pole giving his team a 2-0 edge on a nice lob.
The Australians looked in bother when Kubler was broken to love in the opening game of the third set.