The Minnesota Vikings’ final act of sportsmanship in their shock victory over the New Orleans Saints on Sunday cost bettors a lot of money. The Vikings won the NFC Divisional Round game over the Saints on a last-second 61-yard touchdown pass to wide receiver Stefon Diggs at US Bank Stadium in Minneapolis. When Diggs ran into the end zone, the clock read 0:00, meaning the game was over. But the rules of football stipulate that even if a team scores a touchdown with no time left on the clock, it still needs to kick an extra point. Diggs’ touchdown gave...