Shea Theodore scored on a snap shot from the high slot with 51.5 seconds left in overtime and the Vegas Golden Knights beat the Utah Mammoth 5-4 after squandering a three-goal lead, tying their first-round playoff series at two games apiece. Game 5 in the best-of-seven series is Wednesday night in Las Vegas. Vegas’ Brett Howden scored his second goal of the game on a tip-in with 9:35 remaining in the third period, and that forced overtime after Utah had stormed back with four straight goals. The Golden Knights appeared to have won the game midway through the overtime period when Pavel Dorofeyev tapped in a loose puck with 9:41 left, but the apparent score was waved off when it was determined Vegas was offside.