Standing behind the sidelines, Seriki took the throw and found Whatmough, who found Leo only for Leo to let it go to O'Shea without touching it.
Jackson had been so keen on getting to the ball that he hadn't even noticed when the dummy had been executed, as for another second, he continued haggling Leo, who just watched him.
After receiving the ball, O'Shea set his sights on attack.
By now nobody in a Wigan shirt seemed particularly concerned with what their position was supposed to be.
The centre-back strode through Chelsea's shape with enough confidence that even the home crowd began pointing him out and so did the commentary.
"O'Shea's gone forward again here," the commentator said, sounding almost amused.
"You wouldn't think Wigan were the side protecting a three-one lead."
The move continued through him.
He wormed his way through the field, with grace that couldn't belong to a defender.
