Tiger Woods PGA Tour 12: The Masters

You have to earn level 4 sponsorship on Cleveland Golf first by going to the sponsor page and seing what objectives you need to do. This is the hard part really so once you unlock level 4 you are doing well.

Part B is to win a MAJOR with level 4 active, it doesn't matter what brand of clubs or balls etc you use as long as your level 4 Cleveland Golf Sponsorship is active.

The bit that seems to catch people out is that you have to win a Major not just a normal event. As long as it's a Major it doesn't matter if it's 4 days or 1, so long as you win then POP cheevo in the bag!