Manchester United’s Champions League comeback against Paris Saint-Germain will go down in history.
But few thought a victory was on the cards as Eric Bailly stuttered his way through a woeful first-half performance.
Selected in an unfamiliar right-back role, the Ivorian put in the worst outing of his United career.
In fact, it may have been the worst showing of any Red Devil this season.
Bailly is a centre-back, and his struggles on the right proved some players should stick to a single position. Which is why Ole Gunnar Solskjaer must resist any temptation to repeat the experiment this weekend.
With Ashley Young and Luke Shaw suspended, United have only Diogo Dalot and Marcos Rojo available for the clash against West Ham.
But Bailly should remain firmly on the bench.
Signed for £30million in 2016 (BBC), Bailly impressed in his debut campaign at Old Trafford. However, things have gone off the boil ever since.
He still has the innate ability to become a top centre-back. But West Ham will be laughing if he rocks up at right-back later this month.
Instead United must play Dalot on the right and Rojo on the left. The alternative does not bear thinking about after Bailly’s horror show in Paris.