It's often said that reaching the peak of a sport is the easy part, staying there is tougher.
The new Nike Golf ad shows exactly the type of commitment which Rory McIlroy applies to remain one of the world's best golfers.
It's all about 5:30am starts, broccoli and apple smoothies, hitting the gym, endurance work and practice, practice, practice on the course.
https://www.youtube.com/watch?v=cM1z4e8GD74
Last year - again just prior to the Masters - McIlroy starred in a heartstring-tugging ad with Tiger Woods. It show McIlroy idolising Woods as a kid and then 16 years later stepping up to a tee as equals.
https://www.youtube.com/watch?v=ttztouyK2dg