Extra-time could be played should a deciding third Test between Australia and the British and Irish Lions finish in a draw.
Rugby Australia chief Phil Waugh told the Sydney Morning Herald that the Lions board is considering that proposal ahead of this summer's series.
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The Lions drew 1-1 with New Zealand in 2017 after the third Test finished 15-15.
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In domestic competition Super Rugby, if a game is drawn after the regulation 80 minutes then 10 minutes of 'superpoint' extra-time is played with any score deciding a winner.
Waugh said: "We've had some really constructive conversations. That's got to go to the Lions board around whether it's a drawn series, or you decide it through golden point or extra time.
"Our preference, if we put the fans at the centre of everything we're doing, I think that the familiarity that everyone has with 'superpoint' and the interest for that in our market is a good guide.
"Obviously, we will be making sure both parties agree. But I think that if you're thinking about some fan engagement, that's certainly very appealing."
Waugh also said both teams had agreed that 20-minute red cards - used in the Six Nations earlier this year - would be in operation for the series, which starts in Brisbane on July 19.
British and Irish Lions 2025 tour schedule
Friday, June 20 | Argentina | Dublin |
Saturday, June 28 | Western Force | Perth |
Wednesday, July 2 | Queensland Reds | Brisbane |
Saturday, July 5 | NSW Waratahs | Sydney |
Wednesday, July 9 | ACT Brumbies | Canberra |
Saturday, July 12 | Invitational AU-NZ | Adelaide |
Saturday, July 19 | AUSTRALIA (first Test) | Brisbane |
Wednesday, July 22 | First Nations & Pasifika XV | Melbourne |
Saturday, July 26 | AUSTRALIA (second Test) | Melbourne |
Saturday, August 2 | AUSTRALIA (third Test) | Sydney |
Sky Sports will show the 2025 British and Irish Lions tour of Australia, with all three Tests against the Wallabies and six warm-up matches exclusively live.