Thomas Tuchel made a mistake with his Chelsea team selection against Leicester City, according to Ian Wright.
Youri Tielemans' wonder-strike was the difference between the two teams in Saturday's FA Cup final at Wembley Stadium as the Blues missed out on a piece of silverware.
Tuchel made five changes to the Chelsea side that were beaten by Arsenal on Wednesday night with Marcos Alonso, Antonio Rudiger, N'Golo Kante, Hakim Ziyech, and Timo Werner all coming into the team.
Reece James was one of six players to keep his place in the side, but his role was slightly different in Tuchel's favoured 3-4-2-1 formation.
Instead of operating as a right-wing back, the England international was part of the back three alongside Antonio Rudiger and Thiago Silva.
That meant captain Cesar Azpilicueta played as the right-wing back.
And despite James coping extremely well with Jamie Vardy - limiting the Leicester striker to a few half chances - Wright thinks the Blues lacked an attacking thrust with the defender playing out of position.
"You have to say Reece James did a good job on him," Wright said on BBC Sport.
"For me it was a bit of a mistake from Tuchel, I would have played James on the right [wing-back] because I think they lost that thrust."
Ahead of kick-off, Tuchel explained his team selection.
"We were disappointed. I made my decisions and the team was not so sharp like normal," he told BT Sport. "This is my responsibility and we arrive a bit angry in ourselves.
"It's good and everyone is fully awake and we feel ready."
