Tough hits are for the field, not the home. That’s the message the Minnesota Vikings star got yesterday when the league suspended him without pay until next April. Peterson has been riding the bench since September — with pay — for allegedly hitting his four-year-old son with a switch. The running back, who pleaded no contest to a misdemeanor charge in court, plans to appeal the suspension. But some are beginning to question the league’s newly assumed role in doling out punishment.