The 2020 Six Nations is set for a dramatic finale with three teams still able to win the title going into the last match.
Ireland, England and France all have the chance to win the championship - seven months later than originally scheduled - with France hosting Ireland in the final match of the day.
England lead the standings with 18 points after a bonus-point win over Italy - here's what Ireland or France have to do to take the title from them.
If they earn a bonus-point win against France - achieved by scoring four tries or more - they will take the title with 19 points.
They could still secure the title with a four-point win if they triumph by seven points or more.
If points and points difference is the same then it's down to tries... which is 14-14 as it stands.
But if Ireland win by six points without scoring a try, the Championship will be shared.
For France to win the 2020 Six Nations they need a bonus-point and to win by at least 31 points.
If it comes down to the number of tries scored, France have scored 13 to England's 14 but would overtake England if they secure the bonus-point tries they need.
What about the women's championship?
Unbeaten England have already secured the women's title but will complete back-to-back Grand Slams if they beat Italy in Parma on Sunday.
The match between France and Ireland and Wales' game against Scotland have both been postponed because of positive Covid-19 tests.
The championship will not finish until December after Scotland had three matches disrupted by the coronavirus pandemic.
- 1 November: Italy v England - 17:00 GMT - live on BBC Radio 5 Live & online
- England's Hunt out of Italy game after coronavirus test
- I didn't know we had won the Six Nations, I was playing Super Mario - Shaunagh Brown column
- Rugby Union Weekly: The Premiership review, a Six Nations preview and Eddie Jones
- Americast: All you need to know as the US election day nears