Here, RUCK looks at who is currently sidelined, doubtful and unavailable and why…
*this list will constantly be updated as injury news is released
SIX NATIONS POLL:
Six Nations injury list 2020
IRELAND
With Joe Schmidt leaving the head-coaching role, and a couple of key retirements, the Irish will be hoping for a full squad of fit players to get back the form they showed in their 2018 Grand Slam campaign.
LOCK
- James Ryan (Calf) - Will be touch-and-go for the opening game against Scotland.
FLY-HALF
- Joey Carbery (Wrist) - Will almost certainly miss at least part of the campaign after undergoing surgery for wrist ligament damage
- Johnny Sexton (Knee) - Stuart Lancaster confirmed that the number 10 is highly unlikely to play before the start of the Championship as he recovers from knee ligament damage.
ENGLAND
Eddie Jones' men will be looking to get over their World Cup Final loss with a good 2020 Six Nations.
LOCK
- Charlie Ewels (Knee)- He will miss two to three months with knee injuries
NUMBER 8
- Zach Mercer (Ankle) - He will miss two to three months with knee injuries
CENTRE
- Henry Slade (Ankle) - Will miss the start of the Six Nations after fracturing his ankle
BACK-THREE
- Joe Cokanasiga (Knee) - He picked up a significant knee injury during the World Cup. He is yet to feature this season and his return date is still unknown as he continues to work with the club’s medical staff.
- Ruaridh McConnochie - The winger has been absent for several weeks with an undisclosed injury but is set for a return in the next few weeks
- Mike Brown (Knee) - The 34-year-old, who has won 72 caps for England, is expected to return to action within "six to nine months" according to the Premiership club.
SCOTLAND
2019 was a year to forget for the Scots and once again making sure Finn Russell and Stuart Hogg are fit will be of vital importance. So far, it looks like Gregor Townsend will have everyone available.
WALES
Like Ireland, Wales also have a new coach in the form of Wayne Pivac. No doubt he will look to continue the success of 2019’s Grand Slam with an injury free tournament.
PROP
- Dillon Lewis (Hamstring) - He's been absent with a hamstring strain, although at least he is believed to be pretty close to a return.
- Tomas Francis (Shoulder) - Set to miss the start of the Six Nations following surgery
FLANKER
- James Davies (Back) - Not played since the World Cup
- Justin Tipuric (Ankle)
FLY-HALF
- Gareth Anscombe (Knee) - Last year’s Grand Slam playmaker is out for the season
- Rhys Patchell (Shoulder) - Set to miss the start of the Six Nations following surgery
CENTRE
- Owen Watkin (Knee) - Set to miss the start of the Six Nations following surgery
BACK-THREE
- Liam Williams (Ankle) - Set to miss the start of the Six Nations following surgery