Rory McIlroy’s quest to charge back into contention at the US PGA Championship started in fine fashion with two early birdies. The 37-year-old was furious after a “s***” four-over opening-round 74, having finished with four successive bogeys. He was one of the last groups to begin his second round and he did so eight shots back from clubhouse leader Alex Smalley, with making the cut – which stood at three over – his first objective. McIlroy was in the rough off the tee at the first but recovered beautifully to make par before finding birdies at two and four to begin his march up the leaderboard. Low-scoring has proved tough as Aronimink Golf Club bit back at thoughts that it would not challenge the world’s best golfers. McIlroy’s Ryder Cup team-mates Shane Lowry and Tommy Fleetwood posted rounds of 76 and 75 respectively in the morning, while world number one Scottie Scheffler labelled the pin locations the “hardest I’ve seen on tour”.…