Rory McIlroy's pre-PGA Championship practice at Aronimink Golf Club was abruptly halted on Tuesday due to a persistent blister under the nail of his right small toe. The world No. 2, who had previously described the ailment as 'a little sore,' was seen removing his own toenail after soaking his foot in a bath on Monday, according to Golf Channel. Despite downplaying the issue during a press conference, McIlroy completed only three holes of the scheduled practice before leaving the course on a golf buggy, revisiting the injury with his shoe and sock removed.