rule 9-6 art 4
...It is illegal participation:
d. To use a player, replaced player, substitute or pretended substitute to decieve oppenents at or immediately before the snap or free kick.
or
9-9 art 5
Neither team shall commit any act which, in the opinion of the referee, tends to make a travesty of the game.
Also, was the player between the numbers after the ready for play?
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