Rory McIlroy's victory at the Masters caused a lot of reactions, and most were delighted because the Northern Irish golfer managed to finally achieve his goal after years of searching for a career Grand Slam.

Now that Rory McIlroy has completed his career Grand Slam, what is left for him to conquer in professional golf? Jim Natz has a bold answer.

Rory McIlroy won the US Open in 2011, the PGA Championship twice (2012 and 2014) and The Open in 2014 before completing the career Grand Slam with play-off victory at The Masters; McIlroy is just the