Mitch Larkin has clinched the silver in the men's 200 metres backstroke final.
He was one of the favourites going in and managed to hold off Russia's Evgeny Rylov.
USA's Michael Phelps has added another gold medal to his record-breaking haul, taking out the men's 200 metres individual medley.
He now has 22 gold medals and has picked up four at the Rio Olympics.
Taylor McKeown has finished fifth in the women's 200 metres breaststroke final after qualifying fastest from the semi-finals.
She came in behind Japan's Rie Kaneto in first, Russia's Yulia Efimova and China's Jinglin Shi.
The men's quad sculls have come in just behind Germany to claim silver in the final.
The Australians challenged Germany strongly towards the end but fell off in the final metres to finish a second behind.
The Estonian team came home with the bronze.
Team member Alexander Belonogoff said they felt they had rowed their best race.
"It's awesome to go home with a little souvenir," Belonogoff told olympics.com.au.
"Would have been nice if it was gold but, look, we did what we could today.
"Full credit to the Germans, it was tough and slow conditions. They jumped us out the blocks and we obviously didn't have enough room in the second kilometre to just peck them back."
Meanwhile kayaker Jessica Fox added a bronze medal in the women's K1 final to the silver medal she won in London in the same event.
Fox was in the gold medal position until a late penalty pushed her to silver with four paddler left to run.
In the end, Spain's Maialen Chourraut and New Zealand's Luuka Jones pushed the 22-year-old Australia back into the bronze medal position.
She is now Australia's most successful slalom paddler.
