Alexander Isak injury: Possible ACL Injury Against Spurs – return date & FPL verdict
Alexander Isak: Possible ACL Injury Against Spurs, analysed by physiotherapist Jeppe on 20 Dec 2025. Jeppe's read: “I hope it's not serious and I'll be wrong. I wish him a fast recovery.”
By Jeppe, physiotherapist · Last updated:
What happened
Alexander Isak - Possible ACL Injury Against Spurs. Jeppe published his analysis on 20 Dec 2025, in the 2025/26 FPL season.
Injury explained (physio view)
Isak has been subbed off due to what seems like a serious injury.
In the same moment he scored the opening goal against Spurs, Isak was tackled by Micky van de Ven.
Look at Isak's left leg and foot. The foot is fixated while the crus (lower leg) is being pushed forward relative to the femur.
This is the exact function of the ACL, which of course makes that a possible injury. The ACL, simplified, is making sure the crus doesn't twist and/or slide forward relative to the femur.
Another picture we can analyse shows the foot fixated with the crus externally rotated relative to the femur. This is also an ACL injury mechanism.
It's not looking good.
From the replay footage I've seen, it's hard to analyse with certainty as it's a chaotic situation. Upon replay, ACL or MCL rupture/damage first came to mind.
I'm not certain, as it's not completely clear, but considering Isak's emotional state, it's not looking good. Players are often the best indicators of injury severity.
If I had to make a prediction I would probably bet on ACL.
I hope it's not serious and I'll be wrong. I wish him a fast recovery.
Originally posted on X by @FPLPhysioo on 20 December 2025.
Expected return date
No return date confirmed yet. Jeppe's estimate, where he gives one, is in his analysis above.
FPL verdict
Jeppe has not given a hold, bench or sell call on this page yet. His closing line: “I hope it's not serious and I'll be wrong. I wish him a fast recovery.”
For the numbers, compare Alexander Isak's projected points on his player page and against his position in FPL Player Picks.
Alexander Isak: predicted points · FPL Player Picks
Updates
: Alexander Isak Injury Report: Possible ACL Injury Against Spurs
Latest analysis - shown in full above.
: Alexander Isak Injury Report: Hip Impact Against Palace
Alexander Isak was substituted due to an injury sustained during the first half of the match against Palace.
In a collision with Mitchell, Isak was left in evident pain, which visibly impaired his mobility until he was taken off.
From the footage, it appeared he suffered a significant impact to his right hip area. The medical team evaluated him on the pitch, and although he managed to continue playing for approximately ten minutes more, he was ultimately substituted. This delay in substitution is somewhat encouraging, as an immediate substitution would typically indicate a more severe, possibly muscular injury.
I anticipate that Isak will recover from this injury relatively quickly.
Originally posted on X by @FPLPhysioo on 30 November 2024.