Aronimink Golf Club has turned the PGA Championship on its head this week, leaving players and experts alike stunned by its true challenge.

Coming into the tournament, many believed this would be a birdie-fest—a race to the bottom where scores would tumble toward 20-under par, threatening major championship records. Rory McIlroy himself predicted minimal strategy off the tee, suggesting it was all about bombing driver and figuring out the rest from there.

But through two days of competition, Aronimink has proven the doubters spectacularly wrong. The leaders sit at just four under par, and the course is only expected to get tougher as it dries out under the Philadelphia sun.

CBS analyst Johnson Wagner has pinpointed exactly what everyone got wrong. The wide fairways that players assumed would be easy targets are actually a masterful illusion—classic Donald Ross design at its finest.

"I think you look back to the BMW Championship here in 2018, when Keegan got to 18-under, and the expectation was that 63s and 64s would be available every day," Wagner explained. "But these are some of the tightest fairways I have ever seen in my life."

The secret lies in the fairway camber combined with the dry conditions. What appears generous from the tee box is actually a much smaller landing area, as golf balls bounce and roll into the long, thick rough. "They're huge, but with the slopes, they're difficult to hit," Wagner noted. "And some of the thickest blades of rough ever."

Justin Thomas echoed those sentiments, admitting that no one expected the cold temperatures and gusting winds that have made Aronimink play even more difficult than anticipated.

As the weekend approaches and the course continues to firm up, players will need every advantage they can get. Whether it's precision off the tee or smart club selection, Aronimink has reminded everyone that sometimes the biggest challenges come in the most unexpected packages. The Wanamaker Trophy won't be won easily this year.