By Tobias Carroll Are we witnessing a potential shift in power in the world of golf? We might be! The short version is that Saudi Arabia’s sovereign wealth fund is backing a golf league that would act as a rival to the PGA Tour. Golf Digest has a good overview of the situation here, which gives a sense of what’s at stake and where some of the sport’s biggest names fall in the debate. The possibility of the rival league gaining prominence has shocked some golfers, while others have declared their support for it. Phil Mickelson is in the latter camp, and has declared that, while he’s no fan of t…