U.S. Open forecaddie: Running analysis of Round 2 at Oakmont

Stay tuned throughout the day as theScore keeps you updated with insights and analysis from Round 2 of the U.S. Open.

The all-important second round had everyone in the field battling to make the cut. Oakmont was relentless, and no one was safe regardless of their score on Day 1.

Below, we kept our eyes on the leaders and tracked those fighting to make the weekend. (All times ET.)

8:35 p.m. - Horns blow to end Day 2 due to inclement weather. Here's how the top of the oddsboard stands heading into the weekend.

Sam Burns' 5-under day was the best score by two shots. He rocketed up the leaderboard as the field struggled around Oakmont for a second day. The second-round scoring average was +4.74.

Viktor Hovland did his best to keep pace with Burns by posting a 2-under 68. Hovland is leading the field in strokes gained: tee to green, while Burns is third.

Scottie Scheffler is seven shots off the lead but the third favorite on the oddsboard. His 71 on Day 2 was below his standards, but it didn't eliminate him from contention.

Rory McIlroy fought hard to make the cut, birdieing two of his final four holes to secure himself a weekend tee time. With how hard Oakmont is playing, there's a chance McIlroy finds himself closer to the top of the leaderboard heading into the final round if he can post a low number early Saturday.

7:55 p.m. - The second of two gruelling days at Oakmont is coming to a close. The cut is locked in at 7-over with a number of marquee players headed home early. Only three golfers are under par through 36 holes: Sam Burns (-3), J.J. Spaun (-2), and Viktor Hovland (-1).

7:10 p.m. - Rory McIlroy sneaks inside the cut with two birdies in his final four holes. Ludvig Aberg, Bryson DeChambeau, and Tommy Fleetwood, who doubled his final hole, will all miss the cut.

6:35 p.m. - J.J. Spaun plays his final four holes at 2-over par to slip to 2-under for the tournament. His score is still 2.68 strokes better than the field average, and he's a top-four favorite on the oddsboard.

6:20 p.m. - Bryson DeChambeau's title defense will come up well short. He's 4-over in his last three holes and three shots back of the projected 7-over cut with only two holes remaining. He ranks 137th in strokes gained: putting and 112th in around the green. It will be his first missed cut at the U.S. Open since 2017.

5:55 p.m. - DeChambeau makes a double-bogey on No. 5 and is also in danger of missing the cut. He has four holes remaining to get back to 7-over.

5:45 p.m. - Oddsboard update:

5:35 p.m. - Rory McIlroy and Ludvig Aberg are both outside the cutline and running out of holes. Neither has a par-5 remaining and will need some late magic to make the weekend.

4:45 p.m. - After briefly sneaking inside the projected cutline, McIlroy drops a shot on No. 11 to fall back to 8-over. He has Oakmont's four easiest holes remaining to find a birdie and keep his weekend chances alive.

3:50 p.m. - 7-over is trending toward being the cut, meaning McIlroy (+8), Patrick Cantlay (+8), and Matt Fitzpatrick are on the outside looking in. Tommy Fleetwood (+7) and Aberg (+7) are moving in the wrong direction with half their rounds remaining.

3:45 p.m. - The difficult U.S. Open venue is making it feel as though no one is hitting good shots. Niklas Norgaard has the low round going of the afternoon at 3-under through five. Other than him, no one of note is making a run. Thriston Lawrence, who has missed six straight cuts on the PGA TOUR heading into this week, is the new leader at 5-under.

2:50 p.m. - Players we're watching hovering around the cut: Aberg (+4), Phil Mickelson (+4), Wyndham Clark (+6), Cantlay (+7), McIlroy (+8), and Justin Rose (+9).

2:15 p.m. - McIlroy opens his first round with a double-bogey. Meanwhile, Xander Schauffele records back-to-back birdies to climb to even par for the event. Leader Spaun is also on the course and is even through four.

Cutline update from DataGolf:

• 6-over: 44.5%
• 7-over: 51.5%
• 8-over: 3.8%

1:40 p.m. - Scottie Scheffler salvages a 1-over 71 by gaining over two strokes putting. He was, once again, visibly frustrated during his round, and it appeared headed toward a far worse number. But he played the tough front nine at even par to keep him in the mix. He ended the day in a tie for 37th, which will surely improve as the afternoon wave takes on Oakmont.

1:10 p.m. - The morning wave is starting to sign scorecards. Sam Burns posts the week's lowest round - a 65 capped by a brilliant par save on his final hole. He's in the clubhouse at 3-under and the betting favorite at +425 on theScoreBet/ESPN Bet. Brooks Koepka shoots 4-over to sit at 2-over for the tournament. Jon Rahm and Jordan Spieth both carded 75s but will make the cut. Justin Thomas and Sepp Straka are among the early notables heading home early.

12:55 p.m. - LIV Golf's top player, Joaquin Niemann, is fighting to make the cut. He's 8-over with three of the hardest holes on Oakmont remaining. Niemann turned in his best career finish at a major at the PGA Championship when he finished in a tie for eighth. He entered the week after earning his fourth victory on LIV this year.

12:15 p.m. - Sam Burns and Viktor Hovland are playing a different course, at 5-under and 4-under, respectively. The course is playing 4.47 strokes over par.

11:45 a.m. - Burns, coming off a playoff loss at the Canadian Open, is 5-under in Round 2, two shots better than anyone else on the course. He's now the betting favorite at +650 on theScoreBet/ESPN Bet.

11:20 a.m. - The front nine (+3.73) at Oakmont is playing nearly three strokes more difficult than the back (+0.85) - something to remember when looking at the leaderboard.

11:00 a.m. - Cutline update from DataGolf:

• 6-over: 34.5%
• 7-over: 55.3%
• 8-over: 8.4%

There are a few notable players in a second-round free fall. Jon Rahm is 5-over through 11, sitting at 4-over for the tournament. Jordan Spieth started even and is now 5-over. Justin Thomas doesn't look like he'll be playing weekend golf, sitting at 10-over with six holes to play. And Sungjae Im, who got to 5-under Thursday, is down to 2-over for the tournament.

10:40 a.m. - Viktor Hovland is playing the best of anyone on the course right now. He's 4-under through 10 holes to climb one behind leader J.J. Spaun. Hovland was lights out tee-to-green in Round 1, which carried into today. He added a chip-in eagle on No. 17 to ignite his round.

10:30 a.m. - Since his birdie on 17, Koepka has bogeyed three straight holes to fall back to even for the tournament - a reminder that a good round can be quickly flipped upside down at Oakmont.

10:10 a.m. - Scheffler's struggles continue, this time on Oakmont's greens. On the drivable par-4 17th, Scheffler left himself a 12-footer for birdie and walked off with a bogey. He's 1-over through eight, in desperate need of a couple of birdies.

9:35 a.m. - Koepka steals a shot on the short par-4 17th. His drive ended up in a brutal position, but a perfect pitch over a bunker left him an easier chip for a birdie, which he drained. He's 1-under on the day and one back of Spaun. Even though he missed both major cuts this year, the five-time major champ is a serious contender at Oakmont.

8:55 a.m. - Thomas is 2-over through five holes and on the outside of the projected cut. If he fails to make the weekend, it would be his seventh missed cut in his last 11 major starts.

8:20 a.m. - Cutline projections from DataGolf:

• 6-over: 36.0%
• 7-over: 40.4%
• 8-over: 12.8%

8:10 a.m. - Rahm, Scheffler, and Koepka - the top three on the oddsboard after Round 1 - are on the course. Rahm bogeyed his first, Scheffler birdied his opening hole, and Koepka is even through two holes. Players we'll be watching who are fighting to make the cut in the morning wave include Thomas, Jason Day, and Joaquin Niemann.