Instead she waited until confirmation of the victory flashed up on the big screen after her change-over with butterflyer Emma McKeon<\/a> was cleared by officials. <\/p>\n Her instincts weren't that far wrong, such are the margins between victory and bust. Campbell executed a near-perfect changeover before her leg, with a reaction time of just 0.04 proving to be the difference as Australia held off the USA team by 0.13 of a second, with Canada in third<\/a>.<\/p>\n "I've either done a very good changeover, or we're disqualified\u2026 You've got to risk it to get the biscuit, and I'm glad we got the biscuit," a relieved and jubilant Campbell admitted after the race.<\/p>\n Campbell wasn't the only one suspicious about the change-over.<\/p>\n In commentary Leisel Jones gasped as the freestyle star dived in and social media went into meltdown with American swimming fans claiming Australia had cheated.<\/p>\n Those claims were easily disproved by the officials who have incredible technology at their disposal to time wall touches and feet leaving the blocks.<\/p>\n "I still just can't believe we just did that, that was an incredible effort from everyone," Campbell said.<\/p>\n "Obviously I was a little disappointed with my 50m freestyle earlier, but I just told myself that you find out what you're made of in the times when things don't go you way; not when things are working well for you.<\/p>\n "I took that mindset into this race and I thought you had to be brave and get back out there."<\/p>\n Following the win, tributes poured in for Campbell, who now leaves the Tokyo Olympics as a four-time gold medallist, having secured gold both at London 2012 and Rio 2016.<\/p>\n https:\/\/twitter.com\/ByPatForde\/status\/1421688623280185346<\/a>https:\/\/twitter.com\/JonHealy\/status\/1421660505962213377<\/a>https:\/\/twitter.com\/GrogsGamut\/status\/1421665377105301505<\/a>https:\/\/twitter.com\/ScottBaileyAAP\/status\/1421657889777733638<\/a>https:\/\/twitter.com\/BenCameron23\/status\/1421659095099052033<\/a>https:\/\/twitter.com\/Neroli_Meadows\/status\/1421660744869847040<\/a><\/p>\n<\/p>\n
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