GWANGJU, South Korea -- Sun Yang was in the middle of controversy at the world swimming championships again. Only this time, it wasn't his doing.
The Chinese star still got shunned on the podium again after winning the 200-meter freestyle on Tuesday night after Danas Rapsys of Lithuania finished first and got disqualified for an apparent false start.
The Chinese star touched second, but got elevated after Rapsys had already celebrated in the pool.
Rivals Lilly King of the U.S. and Russia's Yulia Efimova, meanwhile, kept all the drama in the pool in the 100 breaststroke. They were neck-and-neck down the stretch before King got her hand on the wall first, touching in 1:04.93.
Efimova was second in 1:05.49. Martina Carraro of Italy took bronze.
Sun appeared surprised, clasping his hands to his face, but quickly sat on the lane rope and raised both arms in the air as a mix of cheers and boos rang out.
Katsuhiro Matsumoto of Japan took silver. Martin Malyutin of Russia and Duncan Scott of Britain tied for bronze.
On the podium, Scott wanted no part of sharing the moment with Sun.
Scott kept his hands clasped behind his back and refused to shake Sun's hand, standing off on his own while the other medalists joined Sun to pose for photographers.
Sun, who served a three-month doping ban in 2014, is being allowed by FINA to compete in Gwangju ahead of a Court for Arbitration in Sport hearing in September that threatens Sun's career.
In a statement, FINA said its executive board met to discuss the situation involving Sun and Scott and decided to send warning letters to both swimmers.
"Both competitors had an inadequate behavior on this occasion, which is not acceptable,'' FINA said, citing a specific rule in its constitution.
Sun has been accused of smashing vials of his blood with a hammer during a clash last year with testers, and faces a lifetime ban if found guilty.
"He does quite a good job of making sure everyone continues to know about it,'' Scott said, referring to Sun's pending doping case. "So I guess that's all I've got to say about that.''
Sun spread his arms apart and looked at Scott as the Brit turned to come off the podium.
"You're a loser,'' Sun told Scott. "I'm a winner.''
Sun and the other two medalists stopped for photographers on the pool deck, but Scott kept on walking.
"The athletes are starting to stand up for themselves and stand up for what they believe in, so I commend them,'' King said. "That's incredibly brave.''
There was a mix of boos and cheers from Chinese fans in the crowd at Nambu University Municipal Aquatics Center.
"If people are booing him it's for a reason,'' British swimmer Adam Peaty said of Sun. "He should be asking himself now should he really be in a sport when people are booing him?''
Peaty said Scott's action was "completely right.''
"The most important thing as a sports person is you have a right to a voice,'' Peaty said. "Duncan shared his voice and so did the crowd, so it's completely fair.''
After Sun won the 400 free, silver medalist Mack Horton of Australia refused to step on the podium or acknowledge Sun during the medals ceremony. FINA, swimming's governing body, sent warning letters to Swimming Australia and Horton for his actions.
"FINA has currently done more to reprimand Mack Horton than they have done to reprimand Sun Yang,'' King said.
Sun, the current Olympic champion in the 200 free, earned his third straight medal in the event at worlds and second gold in a row.
He was timed in 1 minute, 44.93 seconds.
King called out Efimova at the Rio Olympics, saying she wasn't a fan. Efimova served a 16-month doping ban in 2013 and failed a drug test in 2016, but wasn't punished.
However, the intensity between them has clearly dissipated.
King and Efimova clasped hands over the lane rope. Later, Efimova clapped as King took the top spot on the podium and they embraced and kissed after the ceremony.
Without defending champion Katie Ledecky in the field, Simona Quadarella of Italy won the 1,500 freestyle in 15:40.89 -- well off Ledecky's world record of 15:20.48.
Earlier Tuesday, the American star withdrew from the final because of an unspecified illness. Ledecky also dropped out of the 200 freestyle heats.
Sarah Kohler of Germany earned silver and Wang Jianjiahe of China took bronze. Murphy, who was under his own world-record pace at the turn, faded to fourth. Fellow American Matt Grevers was fifth.
Olympic and defending world champion Ryan Murphy was upset in the men's 100 backstroke as Xu Jiayu of China won in 52.43 seconds.
Evgeny Rylov of Russia took silver and Mitch Larkin of Australia got bronze.
In the women's 100 backstroke, Kylie Masse of Canada won in 58.60 seconds.
Minna Atherton of Australia took silver and American Olivia Smoliga earned bronze.
Kathleen Baker of the U.S., the world record-holder, tied for sixth after being tied for the lead at the turn.