Aronimink Golf Club has been a surprise package at the PGA Championship, with players and experts alike underestimating its challenges. The course's narrow fairways and undulating slopes have proven to be a formidable test, with leaders currently sitting at just four under par. This unexpected difficulty has been a result of the fairways' camber and the course's dryness, which has made the fairways smaller targets than they initially appear. Johnson Wagner, a CBS analyst, highlighted this unique feature of Aronimink, noting that the fairways are the narrowest he has ever seen. This has led to golf balls bouncing into the long rough, making the course even more demanding. The narrow fairways, combined with the slopes and thick rough, have created a strategic battle, with players struggling to find the right balance between aggression and precision. The experts' initial assumption that the modern pros would dominate the course was quickly proven wrong, as the players faced a different kind of challenge than expected. The course's unique characteristics have added an extra layer of complexity to the tournament, with the leaders now having to adjust their strategies for the weekend rounds. The weekend promises to be an intriguing affair, with the players' strategies and the course's ever-changing conditions providing a fascinating spectacle for golf enthusiasts worldwide.