Even Las Vegas has taken an interest in Mr. Vegas. Mike Seba of Las Vegas Sports Consultants, a senior oddsmaker who sets odds for the top 30 golfers each week, said Mr. Vegas has yet to crack that list because he’s still making “rookie mistakes.”

Still, Mr. Seba said he likely will include Mr. Vegas among his top-30 golfers this week, even though he doesn’t know much about him. “He’ll probably catch on faster in sports books than a golfer normally would because of the name,” Mr. Seba said. “People might start saying, ‘Hey, I want to bet on that Vegas guy.'”