James didn't see Voldemort as much as guessed when he saw the crowd. It wasn't the normal crowd at games, but people were panicking, going into all directions.
He Apparated to the thick of things, knowing just how many people would complain about him arriving blindly where Voldemort could be, but he didn't see that he had a choice.
"It's Voldemort," one man shouted.
James grabbed his arm. "Where?"
The man pointed toward the east side of the stadium and James was running again, not wasting any more time.