BEIJING -- Swimming officials from Australia and China have joined the fray as a feud over doping between swimmers Mack Horton and Sun Yang boils over at the Rio Olympics.The Chinese Swimming Association asked Horton on Monday to apologize for his inappropriate words after he labeled Sun a drug cheat -- a reference to Suns three-month suspension in 2014 over banned heart medication. Australias Olympic Committee shot back in Hortons defense hours later, saying he was speaking his mind in support of clean athletes and wished him luck.We have no intention of making an apology, Kitty Chiller, Australias chef de mission at the Olympics, said in Rio.Horton, 20, took a dig at Sun while the two attended a news conference Saturday after Horton unseated the Chinese defending champion in the 400-meter freestyle. It was the second time in days that Horton had publicly referred to Suns drug suspension as part of what the Australian team acknowledged is a campaign to unsettle the Chinese star.Sun had earlier been accused of splashing water at Horton in an apparent attempt to get his attention, and Horton made his initial drug cheat reference when asked why he had ignored Sun.We would urge athletes to respect their fellow competitors, International Olympic Committee spokesman Mark Adams said Monday.Sun, 24, who won two golds at the 2012 London Games, has a long history of bad behavior and tangling with others. He has been accused of disruptive pool behavior by swimmers -- both men and women -- from several countries. The Chinese team briefly banned him from competing after a raft of disciplinary issues, including crashing a friends Porsche SUV into a bus in 2013 while driving without a license, landing him in jail.Sun has previously said he did not know the medication trimetazidine, which he took for chronic heart palpitations, had been placed on the banned list when he tested positive.The 2-meter (6-foot-6-inch) Chinese star burst into tears Sunday after losing to Horton, garnering an outpouring of support from Chinese social media users who pilloried Horton on his Facebook page. The Australian was accused of snubbing Suns attempt to congratulate him on his win immediately after the race, although the two did briefly shake hands later at the podium.Mack obviously has very strong views about the need for clean sport, as every single one of us does, and he has every right to express his views and his displeasure in that sense, Chiller said.Chinese swim team manager Xu Qi also laid into Horton, saying the Australian had hurt the feelings between Chinese and Australian swimmers and showed a lack of good manners and upbringing, according to the official Xinhua news agency.Sun, who has largely refrained from firing back at his rival and has called for respect for all athletes, appeared to get his swagger back Monday. He told reporters at an Olympic village bus stop that he is the king in the 1,500-meter freestyle event scheduled for Sunday, when he will again compete against Horton. When prodded, he added that he was no friend of Hortons.The spiraling row has generated a shrill response from Chinese media during what has already been a period of elevated tensions after Australia voiced opposition in recent weeks to Chinese claims of maritime territory.On Monday, Xinhua released a slew of gently critical articles on topics ranging from Australian trade policy to Melbournes quality of life. The Global Times tabloid opted for a more blunt approach, referring to Australia in a commentary as a former British offshore prison that is on the fringes of civilization.We dont know if it is Horton who is silly or its the Australian media that is evil, or perhaps Australia just has a different moral standard, the newspaper said. No one should be surprised at uncivilized acts emanating from the country. Cheap Nike MLB Jerseys . 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He will miss league matches against Chelsea on Monday and West Ham on Dec.Lionel Messis lawyers have tried to show the Argentinian footballer was not familiar with the tax issues that led to fraud charges against him at his trial in Barcelona. Witnesses called to give evidence on the second day of his trial said the Barcelona forward had little knowledge of the corporate structures that authorities say were created to lower the players tax burden in Spain.They said that, although Messi signed documents, it was his father who was actually responsible for the players businesses off the field.Messi and his father, Jorge Horacio Messi, have been charged with three counts of tax fraud and could be sentenced to nearly two years in prison if found guilty of defrauding Spains tax office of £3.1m.The trial started on Tuesday with Messi and his father Jorge Horacio Messi, who have both denied the allegations, not obliged to attend the court every day, but they will have to testify on Thursday.The intention of Mr. Lionel was to attend the plenary hearing, but he has suffered an injury, said Messis lawyer, Javier Sanchez-Vera, who presented a medical report.The Barcelona forward hurt his back during Argentinas international friendly against Honduras last Friday and when asked by the judge whether Messi would attend Thursdays hearing, the lawyer said he would.The court appearance comes just days before he joins his Argentina team-mates for the Copa America in the United States. Messi in action for Argentina Messi and his father are accused of using a chain of fake companies in Belize and Uruguay to avoid paying taxes on £3.2m of Messis income earned through the sale of his image rights from 2007 to 2009.The two have already paid £3.8m to tthe tax authorities as a corrective measure after they were formally charged in June 2013.ddddddddddddThey are charged with three counts of tax fraud. Spanish prosecutors are seeking a jail sentence of 22-and-a half months for Messi and his father if they are found guilty, plus fines equivalent to the amount that was allegedly defrauded.But any such sentence would likely be suspended as is common in Spain for first offences carrying a sentence of less than two years. Messi is not obliged to attend the court every day but will testify on Thursday Under Spanish law, a defendant is not obliged to attend the full trial if prosecutors seek a jail sentence of less than two years, which means Messi is only likely to attend on Thursday for his testimony.The football star and his defence team have argued that the players father handled his finances without reporting to him, and that the striker was not aware of any wrongdoing. My dad handled the cash, Messi said in September 2013 when he was questioned by a judge investigating the case at a court in Gava, a town on the outskirts of Barcelona where the footballer lives.The players father agreed. He has nothing to do [with these issues], he only plays football, Jorge Horacio Messi said.The income related to Messis image rights that was allegedly hidden includes endorsement deals with Banco Sabadell, Danone, Adidas, Pepsi-Cola, Procter & Gamble and the Kuwait Food Company. Also See: Where does Messi rank? Messi player profile La Liga video Guillem Balague ' ' '