According to the Daily Telegraph, Steve Warner called Watson a pretender along with the abuse and tweeted minutes after Watson unsuccessfully reviewed his leg before wicket dismissal in Australia's first innings.
David Warner issued a statement through his management to clearly distance himself from his brother's comments and said that he did not endorse his brother's comments, the report said.
Shane Watson had been at the center of claims by sacked coach Mickey Arthur in his wrongly dismissal dispute with Cricket Australia, the report added.
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