New Zealand won the Rugby World Cup Saturday, beating rival Australia in the final. But the coolest moment of the day came after the match. After receiving his winning medal, Sonny Bill Williams was walking off the field when a young fan ran out from the stands and was tackled by a security guard in front of Williams. In the heat of the moment, the guard probably didn’t realize he was going after a young boy, but the hit was pretty jarring. Williams later described what he saw, noting that Charlie Lines, 14, got “smoked.” “I was walking around doing a lap of honour with the boys,” Williams said, according to Stuff. “A young fella came running out and he got smoked by the security guard, like full on tackled him. I felt sorry for the little fella.” Williams immediately bent over to help the young lad. Williams and a couple of other members of the All Blacks waved the security guard off and welcomed the young boy among them. At that point, Williams put the boy under his arm and walked him back to the stands. A hug from a world-champion rugby player probably was more than Lines ever…