The New Zealand pair of Marcus Daniell and Michael Venus are into the semi-finals of the men's tennis doubles, defeating Colombia's Juan Sebastian Cabal and Robert Farah in a super tie break.
Venus and Daniell now have two opportunities to play for a medal after defeating the tournament's third seeds.
The Kiwi duo took the first set 6-3 in 33 minutes, before dropping the second with an inverse 3-6 scoreline, taking 42 minutes.
But Venus and Daniell showed impressive resolve after at one point looking in trouble at 4-1 down. Level at 1-1 after the first two sets, the match would be decided by a super tie break, with the first to 10 going through to the semi-final.
Even after racing out to a 4-1 and then 7-2 advantage, the Kiwi pair were soon on the back foot, as Colombia roared back to 7-6.
Venus and Daniell kept their composure though. A Daniell volley at the net took New Zealand to 9-7, allowing Venus to serve for the win with two match points up his sleeve.
They'd need just one, as Daniell struck a volley down the line to send the Kiwi duo into the semi-final.
The win means New Zealand will play for a spot in the gold medal match, and even a defeat would see Daniell and Venus playoff for bronze.
The Kiwi pair will meet either the Croatia's Marin Cilic and Ivan Dodig or Great Britain's Andy Murray and Joe Salisbury on Thursday, pending the result of their upcoming quarter-final.