Las Vegas has GOT to win this one. No one expected the Las Vegas Raiders to be searching for their first win of the season in Week 4, but here we are. It’s put up or shut up time for the Raiders as they take on the Denver Broncos as slight favorites according to our friends over at DraftKings Sportsbook. To put it simply, Las Vegas can’t afford to drop this one if they want to keep their playoff hopes alive. The odds are already heavily against them and digging out of an 0-4 hole will be essentially impossible. In…