Is PGA Tour planning to implement a ‘Rory McIlroy rule’ so players can’t skip playoffs? GolfweekMcIlroy absence has Tour considering FedEx rule change RTE.iePGA Tour golf: How Rory McIlroy missing Playoff opener could be ‘good call’ in bid for more FedExCup glory Sky SportsRory McIlroy: Masters champion to miss PGA Tour play-off opener in Memphis BBC