Newtown Square, Pennsylvania – Rory McIlroy and Scottie Scheffler, who together have won four of the past five major titles, have impressed each other with their mental focus and golfing skills. As world No. 1 Scheffler and second-ranked McIlroy prepared to face a world-class field at Aronimink in the 108th PGA Championship, which starts Thursday, they examined each other's most formidable strengths. Scheffler captured last year's PGA Championship at Quail Hollow and British Open at Royal Portrush, while McIlroy took the green jacket at the Masters last month and last year. McIlroy finds Scheffler's focus and consistency among his greatest weapons. "He has played consistently excellent golf for I would say ever since he got his first win back at the start of 2022, and he hasn't really dropped off since then," McIlroy said. "It has been four years of really excellent, consistent golf.…