The 16-year-old followed up her incredible win in the 400 medley three days earlier with another impressive display of power and perfect technique.

But this time she had to work much harder. She was third when they turned for home but overhauled her rivals to win the multi-discipline event in two minutes, 07.57 seconds.

Coutts, who won a relay gold for Australia on Saturday took second place, just ahead of America’s Caitlin Leverenz.

Stephanie Rice, the gold medalist in Beijing four years ago was fourth while world record holder Ariana Kukors was fifth.

Ye won the Asian championship as a 14-year-old in 2010 then added the world title last year but her performances in London, where millions of people around the world are seeing her compete for their first time, have triggered thinly-veiled accusations of doping by the Chinese.

Ye has denied any wrongdoing and Olympic officials hinted her test results from the 400 came up clean.

“We would only comment if we had any adverse finding,” IOC spokesman Mark Adams said earlier. “I am not commenting, so you can draw your own conclusions.”

Miley finished in a time of 2:11.29 minutes but the 22-year-old believes that while she has some sympathy for Shiwen, amidst doping allegations, she says it’s not her job to worry about it.

“It is a shame, but as swimmer as we don’t tend to get involved – we just get in and race and that’s our job,” said Miley.

“When she raced, she put in an outstanding performance and you can’t but applaud that. It’s a shame that people start analysing that that these queries come up.

“For us, it’s not something that we shouldn’t be worry about, but something the officials and the governing body do.

“At the end of the day, it’s ahead-to-head race and she did an amazing race and made us swim faster.

“I’m so happy that I was able to make a final, when last time I was 11th – now I’m seventh in the world. I can’t knock that so I’m really happy,

“This meet was so much better than Beijing. The atmosphere has been great – I know I keep saying it but it really is.

“As a swimmer, I’ve really loved every moment of it – it’s wonderful. I’m looking to having a break, physically and mentally, and then we’ll discuss how to move forward.”

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Shamyakina wins dramatic Olympic epee final

Ukraine’s Yana Shemyakina caused an upset by winning gold in the women’s individual epee with a nail-biting 9-8 extra-time victory over defending champion Britta Heidemann of Germany at the London Olympics.

Twelfth seed Shemyakina, who was 18th at the Beijing Games four years ago, worked her way through the preliminaries here with two key victories over top-ranked Romanian fencers.

She beat fifth seed Ana Maria Branza and then knocked out another Romanian in fourth-ranked Simona Gherman.

Heidemann reached the gold-medal match after a controversial incident in her semi-final against Shin A Lam sparked a one-hour protest.

The South Korean refused to leave the piste, as was her right under the rules, until all protests by her federation failed.

“The German must still have been thinking about the semi-final and wasn’t able to focus as much on my bout,” Shemyakina said through a translator.

The controversy erupted over whether the clock was counting down correctly.

“I am not blaming the argument for my defeat but on the other hand it did cause me stress,” said Heidemann.

“Of course I would have loved to take my second gold medal but after five tough matches here I think I have won silver and not lost gold.”

Shin came back to fence in the bronze-medal match but lost 15-11 to number one seed Sun Yujie of China.

Earlier, the Korean protested against a controversial call for one hour in the semi-final with Heidemann.

Shin was physically escorted off the piste after her team argued against a call that awarded a winning touch to the German.

Shin sat slumped with a towel round her, emotions frayed by watching four years of dreaming of gold end in abject misery.

“I don’t understand how this could have happened. The one hour was really difficult for me and my feelings,” Shin said through an interpreter.

Heidemann, a one-time Playboy model, said she did not blame Shin for the incident.

“It is neither her nor my fault. After the decision the Korean coach came to me and also to my coach and we hugged each other and said we are sorry for each other. I think that was really a fair gesture and I appreciate that,” said the German.

Shemyakina took advantage of the extra time between the semi-finals and the final, discussing tactics with her coach.

According to the Ukrainian champion, the crowd may have played a part in disturbing Heidemann’s concentration for the final after the fans had applauded Shin as she sat with the spotlight on her pristine white uniform in a darkened sports hall.

“In the dressing room you could hear how the crowd supported the Korean fencer and that upset the German a little bit,” said Shemyakina.

“It may have affected her but there was no way I was giving the medal away. She already has a gold and there’s no way I was going to give this one to her.”

for more updated sports:Eurosport - Reuters