By Tom Dierberger Las Vegas Raiders interim coach Antonio Pierce had a Christmas Day to remember. Behind two defensive touchdowns and 145 rushing yards from running back Zamir White, Las Vegas defeated the rival Kansas City Chiefs 20–14 at Arrowhead Stadium. Pierce wore his emotions on his sleeve after the win. “Hell of a job by those guys, our staff, [defensive coordinator] Patrick Graham … it’s tough,” Pierce said to CBS sideline reporter Tracy Wolfson before pausing as tears filled his eyes. The Raiders’ victory was their first win over the Chiefs since 2020, and just their second since P…