This column will provide any field updates, injury news, and other player notes in the days leading up to the Charles Schwab Challenge.

• Field Changes (-): Keith Mitchell withdrew over the weekend.

• Field Changes (+): Henrik Norlander replaced Mitchell in the field over the weekend.

• Field Changes (-): Taylor Montgomery withdrew over the weekend.

• Field Changes (+): Richy Werenski replaced Montgomery in the field over the weekend.

• Field Changes (+): Kevin Tway was added to the field as a sponsor exemption over the weekend.

• Field Changes (-): Parker Coody (sponsor invite) withdrew on Sunday.

• Field Changes (+): Michael Block (sponsor invite) replaced Coody in the field on Sunday.

• Field Changes (-): Adam Svensson withdrew on Monday.

• Field Changes (+): Matthias Schwab replaced Svensson in the field on Monday.

• Alternates List: Sean O'Hair, Cameron Percy, Ryan Armour, C.T. Pan, Charley Hoffman, Chris Stroud, Martin Laird, Doug Ghim, Brent Grant, Brice Garnett.

INJURY REPORT (as of 10am ET, 5/23):

Jordan Spieth (wrist) -- IN

Spieth is currently in the field for the Charles Schwab Challenge. Following his final round at the PGA Championship on Sunday, Spieth said he still planned to play in both the Charles Schwab Challenge and the Memorial Tournament despite a wrist injury that put his status in serious doubt at Oak Hill last week. According to Spieth, the injury has been healing very fast and considers it nothing major.

All things considered, Spieth played surprisingly well at the PGA Championship. His scores got better as the week went on (73-72-71-69) and Spieth ultimately finished T29 for the event. Spieth played the entire week with his wrist wrapped and KT tape down his forearm.

Throughout last week, Spieth expressed that he was having no issues with his regular golf swing and swinging at full speed. This was a quote after R3 last Saturday:

"My normal swings, it's not an issue. It's just when you start getting bunker lips and stuff like that, and you've got to really flick under a flop shot or a bunker shot, I had that today where I just don't have the confidence in it not making it worse, so I just bail a little bit. I probably cost myself a few shots on that. But coming in, I kind of figured that might be the cast."

All that said, it'll be important to monitor Spieth's status in the days leading up to the start of the Charles Schwab Challenge.

Peter Malnati (back) -- IN

Malnati withdrew in his previous start at Wells Fargo Championship during the first round due to a back injury (May 4th). He was also originally listed in the field for the AT&T Byron Nelson but pulled out of that field on May 7th.

He's currently expected to make his return this week at the Charles Schwab Challenge.

Andrew Putnam (back) -- IN

Putnam returned to action last week at the PGA Championship, though missed the cut after shooting rounds of 74-72 (+6 overall). He's expected to tee it up this week at Colonial Country Club.

On May 4th, Putnam withdrew during the first round of the Wells Fargo Championship on May 4th due to a back injury. He did not play the following week at the AT&T Byron Nelson.

Tiger Woods (ankle, foot) -- OUT

Woods announced on April 19th that he underwent a subtalar fusion procedure to address his post-traumatic arthritis from a previous talus fracture. He is currently recovering and looks forward to beginning his rehabilitation.

The 15-time major champion withdrew in his most recent start at The Masters, citing a reaggravation of his plantar fasciitis after being seen walking with a noticeably worse limp during the third round. In February, Woods expressed his goal to play in all of the major championships this year. However, given this news of another ankle surgery and upcoming rehab, expectations should be tempered for Woods' chances at playing in the next three majors.

May 22nd update: Woods officially withdrew from the U.S. Open on Monday, and there's currently no official timetable for his return.

Will Zalatoris (back) -- OUT FOR SEASON

Zalatoris announced on his Instagram account on April 10th that he underwent successful surgery on his back and will now miss the rest of the season.

Zalatoris withdrew just prior to his first-round tee time at The Masters. As it turns out, Zalatoris was dealing with the same back issues (herniated discs) that caused him to be out for the last four months of 2022. Zalatoris has had a very promising start to his career, winning his first PGA Tour event last summer at the FedEx St. Jude Championship, but will now miss at least another five months following a microdiscectomy.

I've seen some confusion out there–this is the first time Zalatoris had back surgery. He did NOT have surgery in 2022 for this issue.

May 22nd update: Zalatoris announced on the ESPN broadcast during last week's PGA Championship that he feels pain-free for the first time in two years following back surgery. He's targeting a September return to the PGA Tour.

Daniel Berger (back) -- OUT

Berger remains sidelined from a back injury that has kept him out since the 2022 U.S. Open. The most recent update suggested he could return sometime in May but that is looking less likely as the month comes to an end. Berger tried to play through this injury last season but said “that was definitely not the answer.” Instead, Berger has opted to take a more patient approach in his recovery.

MAY 2ND UPDATE:

This article from AP News provides background and insight into the back injury Berger has been dealing with for the past year. In the article, Berger notes that it's not a career-ending injury but knows it'll be a challenge to get back to where he was as a top player in the world.

Berger has been posting clips on his Instagram account of him swinging a golf club, suggesting that his return could come soon though there is no official date or tournament that he's committed to yet.

Jhonattan Vegas (elbow) -- OUT

Vegas announced on his personal Twitter account on April 27th that he suffered an elbow injury related to the one that plagued him last year. He underwent surgery in April of 2022, and then later in the year Vegas opted to take the entire Fall portion of the PGA Tour schedule off due to this recurrent injury.

The 38-year-old has not played in a PGA Tour event since the Valspar Championship last month. Vegas said the recovery is taking longer than he expected but is working hard to return as soon as possible.

Kevin Yu (knee) -- OUT

Yu underwent surgery on February 20th for a torn meniscus, which will sideline him for an unknown amount of time.

The rookie was having an excellent first season on the PGA Tour with seven made cuts in 10 starts, one top-5 finish, and two top-10 finishes. In his last start before the injury, Yu finished T7 at the AT&T Pebble Beach Pro-Am.

Erik Barnes (knee) -- OUT

Barnes underwent knee surgery on April 3rd and is without a timetable for his return to the PGA Tour.

The 35-year-old rookie posted on Twitter that he was having reconstructive surgery on his MPFL and a repair of his MCL. Barnes said he's battled knee subluxation issues for the last couple of years which have worsened over the past few weeks. According to Barnes' social media post, the surgery was successful but he expects a long road in his recovery and eventual return to the PGA Tour.

John Huh (elbow tendinitis) -- OUT

Huh has yet to play in an event in 2023 due to elbow tendinitis. His last start came at The RSM Classic (November 20th, 2022).

Philip Knowles (hand) -- OUT

Knowles announced on his Instagram account on May 1st that he severed a nerve in his thumb on February 1st, underwent surgery on February 24th, and started swinging a golf club again on April 14th.

He noted that (as of May 1st) he's nearly back to full function but "range of motion is limited due to scar tissue" and "lack of sensation in the outside part of my thumb."

Knowles is currently without a timeline for returning to the PGA Tour.

Other Player News:

Keith Mitchell -- OUT

Mitchell withdrew from the Charles Schwab Challenge on Saturday for an undisclosed reason. He made the cut and played all four rounds at the PGA Championship last week, seemingly without any health issues (finished T58).

He's expected to return next week at the Memorial Tournament.

Taylor Montgomery -- OUT

Montgomery withdrew from the Charles Schwab Challenge on Saturday for an undisclosed reason. He made the cut and played all four rounds at the PGA Championship last week, seemingly without any health issues (finished T65).

He's expected to return next week at the Memorial Tournament.

Adam Svensson -- OUT

Svensson withdrew from the Charles Schwab Challenge on Monday for an undisclosed reason. He made the cut and played all four rounds at the PGA Championship last week, seemingly without any health issues (finished T40).

He's expected to return next week at the Memorial Tournament.

Parker Coody -- OUT

Coody withdrew from the Charles Schwab Challenge on Sunday in order to honor his commitment to the Visit Knoxville Open on the Korn Ferry Tour this week.

Austin Eckroat-- IN

Eckroat qualified for the U.S. Open via the 36-hole final qualifying in Dallas on Monday. He shots 64-66 (-11 overall). Additionally, Eckroat is coming off a T2 finish at the AT&T Byron Nelson in his most recent start. He led the Bryon Nelson field in Strokes Gained: Putting after switching to his old putter from high school golf.

Paul Haley II-- IN

Haley qualified for the U.S. Open via the 36-hole final qualifying in Dallas on Monday. He shots 63-69 (-9 overall).

Kevin Kisner -- IN

Kisner returned to action last week at the PGA Championship after missing about a month for an undisclosed reason. He missed the cut after shooting 75-78 (+13 overall) at Oak Hill in the opening two rounds.

He's currently expected to tee it up this week at Colonial Country Club.

Zac Blair -- IN

Blair withdrew from the AT&T Byron Nelson on May 10th, one day before the start of the event for an undisclosed reason. He's currently in the field for this week's Charles Schwab Challenge, though his status is worth monitoring.

LIV Washington DC Player News:

Paul Casey (knee, toe) -- OUT

Casey withdrew from the PGA Championship last Tuesday (May 16th) due to toe and knee injuries. He reaggravated pre-existing injuries after trying new golf shoes recently.

He's also out for this week's LIV Washington DC event.

Martin Kaymer (wrist) -- IN

Kaymer withdrew from the PGA Championship on May 12th. After undergoing wrist surgery last November, Kaymer does not yet feel like he is ready to compete for 3 weeks in a row.

"I don't think I will be able to play 3 weeks in a row after the [offseason wrist] surgery...I'm playing good. It's just a matter of I would like to go there with the mindset of I can actually win the golf tournament. I don't have that yet. I have not been practicing at all for the last six months. I've only been putting and chipping and I only hit golf shots during the tournament. So that is not enough to beat the best player in the world."

Kaymer is currently expected to tee it up at LIV Washington DC.

Lee Westwood (knee) -- IN

Westwood withdrew prior to the final round of LIV Tulsa on May 14th due to a medial ligament strain that occurred while running on a treadmill before round two. He said on Twitter on Monday that he feels "good and ready" for LIV DC after rehabbing his injury for the past week.

Hudson Swafford (hip) -- OUT

Swafford underwent surgery on February 20th with the expectation that he would miss 4-6 months. He was seen swinging on the driving range in an Instagram post on May 4th.

Sam Horsfield (hip) -- OUT

Horsfield underwent surgery on May 10th and is expected to miss "a few months" according to a post on his Twitter account.

Bryson DeChambeau -- IN

DeChambeau's game appears to be trending in the right direction after hiring Greg Bodine (former caddie for Tony Finau from 2014-2020). Their partnership began at LIV Tulsa where DeChambeau finished in 7th place and then continued into the PGA Championship where he finished T4.