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Australian Open 2019: heat and tie-break rule changes – explained | Australian Open 2019 | The Guardian
Australian Open 2019, tie-break rules, super tie-break at 6-6, big change to final sets, longest Australian Open match ever | Fox Sports
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Roger Federer survives massive scare at Australian Open to win final set tie-break from 8-4 down - Independent.ie
![Australian Open announces switch to final-set tie-breaks for 2019 tournament | Australian Open | The Guardian Australian Open announces switch to final-set tie-breaks for 2019 tournament | Australian Open | The Guardian](https://i.guim.co.uk/img/media/47a9f10d261f1e944382f533698cf1fdb3c701bd/0_14_2167_1300/master/2167.jpg?width=445&quality=85&auto=format&fit=max&s=893809436651b8aa4387468b04dccb62)
Australian Open announces switch to final-set tie-breaks for 2019 tournament | Australian Open | The Guardian
Australian Open Tennis: Organisers will introduce 'super tiebreakers', with a 10-point tie break at six games all.
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Australian Open 2019: Deciding-set super tiebreak marks four rules for as many Slams as tennis gears up for innovation - Sports News , Firstpost
![Katie Boulter reaches second round of Australian Open - despite being unaware of tie-break rule change Katie Boulter reaches second round of Australian Open - despite being unaware of tie-break rule change](https://www.telegraph.co.uk/content/dam/tennis/2019/01/14/TELEMMGLPICT000185523771_trans_NvBQzQNjv4BqpVlberWd9EgFPZtcLiMQfyf2A9a6I9YchsjMeADBa08.jpeg)