On Monday night, Brent Musburger will call his final game for ESPN before heading to Las Vegas for his new job. At age 77, Musburger did not expect to embark on a new career in the desert, but here he is as the host of a new multichannel network dedicated to sports gambling information. “It’s amazing how a new twist in the road comes and you decide, ‘You know, I think I’d like to do that,’” Musburger told SI.com on Sunday. “It was as simple as that. As you know, I love the games, the action, the people, the fans, but it seems like the right time to do this.