The heaviest? The shortest? The youngest? We take a look at all the players at the 2019 Guinness Six Nations and pick out the key stats you should know.
The six participating countries announced their final squads for the tournament in the last few weeks.
We have crunched the numbers to bring you the essentials before the kick off on Friday night...
Who is the Tallest player in the 2019 Six Nations?
6. Italy: Marco Fuser - 198cm (6ft 6in)
5. England: Courtney Lawes - 201cm (6ft 7in)
3=. Scotland: Grant Gilchrist - 202cm (6ft 7 1/2in)
3=. France: Sébastien Vahaamahina - 202cm (6ft 7 1/2in)
2. Wales: Adam Beard - 203cm (6ft 8in)
1 Ireland: Devin Toner - 210cm (6ft 10in)
Who is the Heaviest Player in the 2019 Six Nations?
6. Italy: Dave Sisi - 120kg (18st 3lb)
5. Scotland: D'Arcy Rae - 125kg (19st 10lb)
4. Ireland: Devin Toner - 129kg (20st 4lb)
3. England: Billy Vunipola - 130kg (20st 11lb)
2. Wales: Tomas Francis - 135kg (21st 4lb)
1 France: Uini Antonio - 156kg (24st 8lbs)
Who are the oldest players in the 2019 Six Nations?
6. France: Louis Picamoles - 32 (05/02/1986)
5 Scotland: Greig Laidlaw - 33 (12/10/1985)
4. Wales: Alun Wyn Jones - 33 (19/09/1985)
3. England: Mike Brown - 33 (04/09/1985)
2. Italy: Sergio Parisse - 35 (12/09/1983)
1 Ireland: Rory Best - 36 (15/08/1982)
Who are the youngest players in the 2019 Six Nations?
6. Scotland: Stafford McDowell - 20 (24/02/1998)
5. Ireland: Jordan Larmour - 21 (10/06/1997)
4. Wales: Aaron Wainwright - 21 (25/09/1997)
3. Italy: Marco Zanon - 21 (03/10/1997)
2. England: Tom Curry - 20 (15/06/1998)
1 France: Romain Ntamack - 19 (01/05/1999)
At 19, he is the youngest player in the championship but deemed ready to make his transition to the senior setup, having steering France to the Junior World Cup title last summer.
Who is the most capped player in the 2019 Six Nations?
6. Scotland: Greig Laidlaw - 66
5. France: Louis Picamoles - 72
4. England: Dylan Hartley - 97
3. Ireland: Rory Best - 113
2. Wales: Alun Wyn Jones -129
1 Italy: Sergio Parisse - 134 caps