US Open cut line 2021: Projected cut, rules, updates for Friday's leaderboard

A handful of top golfers are in danger of missing the cut line at the 2021 U.S. Open on Friday.
The top of the leaderboard at Torrey Pines has several previous major winners in contention. That includes Day 1 co-leader Louis Oosthuizen, who finished Thursday tied with upstart Russell Henley at 4-under par. Francesco Molinari, Brooks Koepka, Hideki Matsuyama and Jon Rahm trail closely behind.
Meanwhile, players like Bryson DeChambeau, Phil Mickelson, Collin Morikawa and Jordan Spieth could miss the cut if they fail to reverse course Friday. Gary Woodland, the 2019 U.S. Open champion, is also flirting with the cut line at 3 over.
Nearly half of the 156-player field will miss the cut at the 2021 U.S. Open.
Here’s everything you’ll need to know about the U.S. Open cut line, rules and results as players jockeyed to make the weekend.
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