Nationals manager Dave Martinez confirmed that Herz (elbow) underwent Tommy John surgery Wednesday in Dallas, Andrew Golden of The Washington Post reports. TalkNats.com was first to report earlier Wednesday that Herz had decided to undergo the season-ending procedure, though it wasn't immediately clear when the surgery would take place. Rather than scheduling surgery for a later date, Herz elected to have the operation performed by renowned orthopedic surgeon Dr. Keith Meister, whom he had recently visited for a second opinion on the partially torn UCL in his left elbow. Martinez noted that Herz's surgery didn't involve the insertion of an internal brace, so he'll likely be in line for a 14-to-18-month rehab process rather than a 12- or 13-month recovery. The 24-year-old is thus unlikely to be ready to contribute for the Nationals until around the middle of the 2026 season.

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60-Day IL - Elbow - Surgery Expected Return: 2026-07-01Latest Davidjohn Herz news

Davidjohn Herz
Game Log

Davidjohn Herz Player Profile
Career History


Davidjohn Herz Splits 2024
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SplitsGSIPWLERAKBBHBPCGHRERSVOSAVGHR
Overall 1988.2494.21063630764541000.22411Home 1257.1363.6692200492623000.2245Away 731.1135.2371400271918000.2236Day 1045.1333.6592100292018000.1772Night 943.1164.8471500472523000.2679vs Righty 00.0000.083281057310000.2198vs Lefty 00.0000.02382019140000.2383June 521.1125.527700251413000.2785July 420.0024.12650018109000.2374August 629.0133.1351400201210000.1891September 418.1224.41810001399000.1911Opponent vs KC 1 5.0 0 1 1.8 3 3 0 0 3 1 1 0 0 0.167 0 vs ATL 2 9.1 0 0 1.9 13 6 0 0 5 2 2 0 0 0.152 0 vs SF 1 2.2 0 0 6.8 4 4 0 0 4 2 2 0 0 0.333 0 vs MIL 1 5.0 1 0 0.0 6 1 0 0 2 1 0 0 0 0.111 0 vs NYM 3 13.0 0 2 8.3 18 5 0 0 18 12 12 0 0 0.316 2 vs COL 2 9.1 0 1 4.8 12 2 0 0 13 7 5 0 0 0.310 3 vs MIA 2 11.0 2 0 0.8 18 1 0 0 5 1 1 0 0 0.132 1 vs SD 2 8.1 0 2 6.5 5 4 0 0 11 6 6 0 0 0.314 3 vs STL 2 9.1 0 1 5.8 12 3 0 0 8 7 6 0 0 0.229 1 vs PIT 1 5.0 1 0 0.0 5 3 0 0 0 0 0 0 0 0.000 0 vs BAL 1 6.0 0 1 3.0 5 2 0 0 4 2 2 0 0 0.190 1 vs CHC 1 4.2 0 1 7.7 5 2 0 0 3 4 4 0 0 0.188 0 Venue @ Pittsburgh 1 5.0 1 0 0.0 5 3 0 0 0 0 0 0 0 0.000 0 @ Colorado 1 3.2 0 0 7.4 5 0 0 0 7 4 3 0 0 0.368 3 @ Atlanta 1 5.0 0 0 0.0 8 3 0 0 1 0 0 0 0 0.063 0 @ Baltimore 1 6.0 0 1 3.0 5 2 0 0 4 2 2 0 0 0.190 1 @ New York 1 3.1 0 1 18.9 5 3 0 0 6 7 7 0 0 0.375 0 @ St. Louis 1 5.0 0 0 3.6 8 1 0 0 3 2 2 0 0 0.167 1 @ San Diego 1 3.1 0 1 10.8 1 2 0 0 6 4 4 0 0 0.375 1 @ Washington 12 57.1 3 6 3.6 69 22 0 0 49 26 23 0 0 0.224 5

Davidjohn Herz Latest News
Gets Tommy John surgery Wednesday

Nationals manager Dave Martinez confirmed that Herz (elbow) underwent Tommy John surgery Wednesday in Dallas, Andrew Golden of The Washington Post reports. TalkNats.com was first to report earlier Wednesday that Herz had decided to undergo the season-ending procedure, though it wasn't immediately clear when the surgery would take place. Rather than scheduling surgery for a later date, Herz elected to have the operation performed by renowned orthopedic surgeon Dr. Keith Meister, whom he had recently visited for a second opinion on the partially torn UCL in his left elbow. Martinez noted that Herz's surgery didn't involve the insertion of an internal brace, so he'll likely be in line for a 14-to-18-month rehab process rather than a 12- or 13-month recovery. The 24-year-old is thus unlikely to be ready to contribute for the Nationals until around the middle of the 2026 season.
Headed for Tommy John surgery

Herz (elbow) plans to undergo season-ending Tommy John surgery, TalkNats.com reports. After being diagnosed with a partial UCL sprain in his left elbow shortly before Opening Day, Herz was shut down for three weeks with the hope that some extended rest and rehab would allow him to pitch through the injury. Ultimately, after receiving two additional medical opinions on his elbow, Herz has decided that surgery is his best option. Herz will likely go under the knife in the coming days, and assuming no other additional damage is detected during surgery beyond the compromised UCL, he should be able to pitch again at some point around the All-Star break next season.
Getting second opinion on elbow

Herz will receive a second opinion on his injured left elbow from Dr. Keith Meister in Dallas, Mark Zuckerman of MASNSports.com reports. Herz has been diagnosed with a sprained UCL, and he will determine after his visit with Dr. Meister whether to undergo surgery or attempt to rest and rehab the injury. If the southpaw does go under the knife, he could be sidelined until around the middle of next season.
Moved to 60-day IL

The Nationals transferred Herz (elbow) from the 15-day injured list to the 60-day IL on Wednesday. Herz was diagnosed with a sprained UCL in his left elbow Tuesday, which typically leads to season-ending surgery. The 24-year-old southpaw may attempt to rehab the injury before resorting to surgery, but he's due for an extended absence either way. He'll cede his spot on the 40-man roster to right-hander Brad Lord, whose contract was selected from Triple-A Rochester.
Diagnosed with elbow UCL sprain

Herz has been diagnosed with a left elbow UCL sprain, Andrew Golden of The Washington Post reports. Herz's velocity was down this spring, which originally attributed to a "dead arm" phase. However, as it turns out, he's dealing with an injury that often requires season-ending UCL surgery, although it's not yet clear whether Herz might try the rest-and-rehab route first. At minimum, the lefty is likely to be out a few months, and in all likelihood, much longer.
Shifted to IL

Herz was placed on the 15-day injured list Monday due to an undisclosed injury, per MLB's transactions log. The team failed to mention that Herz was dealing with an injury prior to optioning him to Triple-A Rochester on Friday, so this transaction is a bit curious. Washington will presumably have more details on the nature of the 24-year-old's injury in the near future.
Optioned to Triple-A

The Nationals optioned Herz to Triple-A Rochester on Friday. Herz will miss the cut for Washington's Opening Day rotation and wrap up Grapefruit League play with nine runs allowed (seven earned) over 9.2 innings. The 24-year-old southpaw posted a 4.16 ERA across 19 starts with the big club last season, and if he's able to return to form in Triple-A, he could rejoin the Nationals at some point this summer.
Might begin season in minors

Herz appears to be on the outside looking in for a spot in the Nationals' Opening Day rotation, Mark Zuckerman of MASN Sports reports. Mitchell Parker seems on track to claim the fifth starter role behind MacKenzie Gore, Jake Irvin, Trevor Williams and Michael Soroka. Herz tinkered with his mechanics this offseason, and the results this spring haven't been pretty, as he's walked nine batters in 9.2 Grapefruit League innings while recording only four strikeouts. The 24-year-old lefty may need some time at Triple-A to regain the form that saw him rack up a 27.7 percent strikeout rate against a 9.4 percent walk rate over his first 88.2 big-league innings in 2024.
Struggling this spring

Herz gave up four runs (two earned) on four hits and a walk over 3.1 innings during Saturday's Grapefruit League game against the Cardinals. He struck out one. While his defense did him no favors -- Jacob Young in center field was the only likely Opening Day starter on the diamond behind him -- Herz also wasn't sharp, something that has been the story of his spring so far. The 24-year-old southpaw tweaked his mechanics this offseason, and he may still be getting comfortable with his new delivery. Through 6.2 innings this spring, Herz has stumbled to an 8.10 ERA and 3:7 K:BB. He still appears set for a spot in the Opening Day rotation, particularly if Mitchell Parker (neck) ends up on the shelf, but a good spring outing or two before camp breaks would go a long way toward reassuring fantasy investors that Herz's promising rookie campaign in 2024 wasn't a mirage.