PGA Tour player Kevin Chappell has described US Open venue Merion Golf Club as ‘a tour event on steroids'.
The course is an unknown quantity for the majority of the US Open field this week, with the last major being held there in 1981.
And Chappell, who played a full 18 with former Masters champion Zach Johnson and Tim Clark on Sunday, feels there is a lack of consistency throughout the course.
"There will be a big discrepancy in play. You can challenge some of these holes if you want."
Whilst former champion Geoff Ogilvy, who had never even seen Merion before the weekend, feels it will be a real test to anyone who misses the fairways.
"The rough is longer than we've seen. You can't make grass grow in four days, but you can cut it. Although I don't think they will!" said Ogilvy.
Heavy rain has engulfed Merion over the last few days, with many players predicting a low-scoring US Open if soft, wet condition remain.
And the seven-time PGA Tour winner is adamant the US Open will be won from the tee.
"It takes a lot of practice to work out some of these lines. On 10 of the holes (minus the par 3s), you've got to be comfortable.
"There's no specific clue where to hit it. You have to know it. Off the tee, it's quite awkward. Someone who drives it the best this week will fare quite well - not the straightest, but the best."
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