Reigning Masters champion Rory McIlroy decided to sit out of the FedEx St. Jude Championship, a decision that has stirred controversy within the PGA Tour and has one PGA Tour official "very concerned."

In an effort to reduce his overall workload on the season, Masters champion Rory McIlroy decided not to play in this week's St. Jude Championship at TPC Southwind in Memphis, Tennessee. As such, the first leg of the FedEx Cup Playoffs will run with 69 of the top 70 players in the world -- McIlroy the lone missing piece from the start of the three-week postseason.