Emily Seebohm's dreams of Olympic gold were foiled in the women's 100m backstroke final this morning after finishing second to fast-finishing American Missy Franklin.
Franklin's time of 58.33 was enough to pip Seebohm in the dying stages as the Australian tired at the death. Japan's Aya Terakawa came third.
Seebohm's time of 58.68 was 0.45 slower than the Olympic record time she set in the heats on Day Two.
A tearful Seebohm was visibly distraught after the race, saying she believed she could have finished better.
"I'm really happy but I wish I could finished it off," she said.
"I feel like I've disappointed my parents and my closest friends. Just really tough.
"It was hurting a lot, I don't know what went wrong.
"Im really happy with it, I wish there was a little bit more I could have given."
Seebohm led the field after the first 50, with Russian Anastasia Zueva her closest challenger 0.25 seconds behind.
With half a lap to go, Seebohm looked noticeably slower, leaving space for 17-year-old Franklin, who competed in the semi-finals of the 200m freestyle earlier, to time her surge perfectly and dart home.
Meanwhile, Bronte Barratt qualified fastest for the women's 200m freestyle final and will line up alongside fellow Australian Kylie Barratt.
Barratt surged home on the final lap of her semi-final after being happy to follow American Allison Schmitt and France's Camille Muffat.
In the final 50 metres, Barratt hit the afterburners to tap home at 1.56:08 just ahead of Schmitt and qualify in the fastest lane for tomorrow's final.
She will be joined by Kylie Palmer who never challenged semi-final winner Federica Pellegrini, but her 1:57.44 was enough to qualify in seventh place.
"I'm so relieved I'm in the final," Palmer said post-race.
"It's sort of a good time, but I guess when you get to the Olympics there's not much in making an Olympic final, so just happy.
"I think when you've got someone like Pellegrini in the race you always know she's going to come hard, so if you stick with her, you're going to do well."