Mickelson, who is in the field this week in South Korea, could drop outside the world's top 50 depending where he and others finish in the no-cut event and how myriad scenarios play out.
Mexico has its first Presidents Cup representative, with Abraham Ancer securing a spot on the 2019 Presidents Cup International Team following his best career PGA Tour finish – a runner-up at The Northern Trust – that vaulted him from No.10 to No.5 on the International Team standings.
As the 13th edition of the Playoffs begin in 2019, the changes set to play out over the next three weeks are more than subtle tweaks but rather a dramatic overhaul to the end-of-the-season event.
