Rory McIlroy withdraws from Arnold Palmer Invitational presented by Mastercard before Round 3 due to back injury PGA TourRory McIlroy withdraws from Bay Hill with back spasms ESPNBack injury sees McIlroy withdraw at Bay Hill Yahoo SportsRory McIlroy withdraws from Arnold Palmer citing back injury Golf DigestRory McIlroy withdraws from Arnold Palmer Invitational with back injury, hopes to play at The Players CBS Sports
