Brisk breezes, dense rough, and greens that are lightning-fast despite rain and watering made practice rounds tough for those who braved the 7,440-yard, par-70 layout on eastern Long Island."I wouldn't want to be putting aggressively on these greens," said 2022 US Open champion Matt Fitzpatrick of England."You have to pick and choose your moments, and that's where course management comes in. You can try to leave it under the hole on some. But with the wind forecast, it's easy for them to get away from you this week and you're going to have to be mindful of that."I want it to get as dry and firm as possible, as US Opens do, and just see where that takes us."Oddsmakers darling Scheffler can become only the seventh golfer to complete a career Grand Slam with a victory on Sunday, his 30th birthday.The American is a four-time major winner and this is his first chance at completing the Slam after winning last year's British Open and PGA Championship.Scheffler played an early afternoon practice round on the back nine with compatriots Brian Harman, Marek Fleming and Chris Gotterup and is set for a Tuesday tour of the front side with South Korean Kim Si-woo and Americans Sam Burns and Gary Woodland.Wyndham Clark, the 2023 US Open champion, decided against going out Monday."This wind is not the normal wind, so if there's any time to take a day off, it was today," he said. "Wind is always a challenge here and that's kind of what everyone talks about."The greens, however, offer the toughest test, Clark said.