They are supposed to be releasing new clubs that you can buy that will be restricted to the higher tiers. We assume that means Pro and Master, but no one really knows for sure.
Also, what the masters do is not important to you because you're in the Pro tier. You don't have to compete with us right now. You're only competing amongst other Pro Tier players. The US Open has been the only time where all tiers played together on the same leaderboard.
So keep at it and you might just snag a few credits in the Pro Tier tourneys. Remember that credits are paid to the top 70 finishes in all credit purse tournaments, so you don't have to win to cash in.