Royal Portrush is not only open to visitors, but its yearly membership dues are what the average American golfer spends on public tee times.

"It's nice to be able to accept adulation, even though I struggle with it at times," Rory McIlroy said of his return to Royal Portrush for the British Open.

Vegas oddsmakers have some ideas on who might be walking away from Portrush as a major champion. Here's a look at this week's betting odds.