The Vegas Golden Knights secured their first regulation win of the season with a 4-2 come-from-behind victory against the Calgary Flames Tuesday night at Scotiabank Saddledome. The Golden Knights trailed 2-0 in the first period but scored four unanswered goals, including two in the span of 2:27 in the third. Jack Eichel scored twice, and Vegas also got goals from Kaedan Korczak and Tomas…