Headlines

  • Red Sox Release Walker Buehler
  • Cardinals To Promote Jimmy Crooks
  • Pirates Place Isiah Kiner-Falefa On Outright Waivers
  • Red Sox To Promote Payton Tolle
  • Corey Seager To Undergo Appendectomy, Not Ruled Out For Season
  • Frankie Montas To Undergo UCL Surgery
  • Previous
  • Next
Register
Login
  • Hoops Rumors
  • Pro Football Rumors
  • Pro Hockey Rumors

MLB Trade Rumors

Remove Ads
  • Home
  • Teams
    • AL East
      • Baltimore Orioles
      • Boston Red Sox
      • New York Yankees
      • Tampa Bay Rays
      • Toronto Blue Jays
    • AL Central
      • Chicago White Sox
      • Cleveland Guardians
      • Detroit Tigers
      • Kansas City Royals
      • Minnesota Twins
    • AL West
      • Houston Astros
      • Los Angeles Angels
      • Oakland Athletics
      • Seattle Mariners
      • Texas Rangers
    • NL East
      • Atlanta Braves
      • Miami Marlins
      • New York Mets
      • Philadelphia Phillies
      • Washington Nationals
    • NL Central
      • Chicago Cubs
      • Cincinnati Reds
      • Milwaukee Brewers
      • Pittsburgh Pirates
      • St. Louis Cardinals
    • NL West
      • Arizona Diamondbacks
      • Colorado Rockies
      • Los Angeles Dodgers
      • San Diego Padres
      • San Francisco Giants
  • About
    • MLB Trade Rumors
    • Tim Dierkes
    • Writing team
    • Advertise
    • Archives
  • Contact
  • Tools
    • 2025-26 MLB Free Agent List
    • 2026-27 MLB Free Agent List
    • Contract Tracker
    • Transaction Tracker
    • Agency Database
  • NBA/NFL/NHL
    • Hoops Rumors
    • Pro Football Rumors
    • Pro Hockey Rumors
  • App
  • Chats
Go To Pro Hockey Rumors
Go To Hoops Rumors

Daulton Jefferies Diagnosed With Thoracic Outlet Syndrome

By Steve Adams | May 20, 2022 at 7:31pm CDT

The A’s placed right-hander Daulton Jefferies on the injured list earlier today amid a series of roster moves, also optioning lefty Kirby Snead and recalling righty Jake Lemoine and left-hander Zach Logue. The A’s originally stated that Jefferies had some nerve irritation in his right arm, but manager Mark Kotsay now gives reporters a much more ominous update, revealing that the 26-year-old righty has been diagnosed with thoracic outlet syndrome (Twitter link via Matt Kawahara of the San Francisco Chronicle). He’s receiving a second opinion.

While not as common as Tommy John surgery, thoracic outlet syndrome often requires surgical repair — an operation that involves removing a portion of the player’s rib in order to alleviate nerve pressure. The success rate for pitchers returning from TOS hasn’t been as strong as those returning from the more common Tommy John surgery, though there are plenty of examples of hurlers who’ve returned to have successful careers. Arizona’s Merrill Kelly, for instance, had thoracic outlet surgery in September 2020 and was back on the mound for a slate of 27 starts in 2021. He’s made another eight starts of 3.27 ERA ball this season.

It’s yet to be seen whether Jefferies will undergo surgery, which would likely end his season. That’ll surely hinge on what he and the A’s hear in his forthcoming second opinion. Even in the event of a non-surgical route, an absence of some note seems safe to expect.

Selected by the A’s with the No. 37 overall pick back in 2016, Jefferies entered the year with just 17 big league innings under his belt. However, the Athletics’ offseason fire sale shipped both Chris Bassitt and Sean Manaea to other clubs, opening the door for Jefferies to win a long-term spot on the starting staff. Jefferies posted a 1.17 ERA through three starts but has been rocked for 23 runs over 24 innings in his past five turns. Overall, he carries a 5.72 ERA with a 16.3% strikeout rate, a 4.7% walk rate and a 46.6% grounder rate. Metrics like fielding independent pitching (3.76) and SIERA (4.15) feel he’s been a good bit better than his ERA would indicate.

The A’s still control Jefferies for five seasons beyond the current campaign, so even if he doesn’t factor into the mix again this season, he should have ample opportunity down the road. For the time being, with Jefferies sidelined, Oakland will look to Frankie Montas, James Kaprielian, Paul Blackburn and a returning Cole Irvin, who’s slated to come off the injured list and start a game this weekend. Logue, recalled today, will probably step directly into the rotation. One of four players acquired in the trade that sent Matt Chapman to Toronto, he’s already made four appearances (three starts) and pitched to a 2.04 ERA with an 18.9% strikeout rate against a 6.8% walk rate in 17 2/3 frames.

Should the A’s need another starter in the near future, they have a pair of other newly acquired options to evaluate. Right-hander Adrian Martinez, acquired from the Padres in the Manaea trade, made his big league debut in a doubleheader against the Tigers last week and tossed 5 1/3 shutout innings with three strikeouts and no walks. Fellow right-hander and trade acquisition Adam Oller, who came over from the Mets as part of the return for Bassitt, could be an option as well. He’s already made four big league starts with the A’s, though he’s been tagged for 20 runs in 14 2/3 frames.

Share 0 Retweet 8 Send via email0

Oakland Athletics Daulton Jefferies Jake Lemoine Kirby Snead Zach Logue

Dodgers Sign Pedro Baez To Minor League Deal
Main
Injury Notes: Wade, E-Rod, Skubal, Murphy
View Comments (9)
Post a Comment

9 Comments

  1. Curly Was The Smart Stooge

    3 years ago

    Where is Dr. Frankenstein when we need him? A little cut there, a little nip there. As long as they’re not afraid of fire, we’re good to go?

    1
    Reply
    • dadofdonnydownvote

      3 years ago

      That last name Jefferies brings back some memories. I remember opening open Topps packs hoping to find a Gregg Jefferies rookies card in the late 80’s. Gregg had a nice career but was done playing in his early 30’s. Probably a distant relation that’s not a common last name.

      Reply
  2. partyatnapolis

    3 years ago

    that sucks for him… this surgery never works to much success.

    4
    Reply
  3. Curly Was The Smart Stooge

    3 years ago

    Wait, I can’t stop wanting to dance, I must have Restless legs syndrome. I can’t boogie enough.
    When are we going to stop creating diseases for our short comings?

    3
    Reply
    • Yankee Clipper

      3 years ago

      Cotard’s Syndrome?

      If you can’t boogie enough, dig deeper, or use a smaller finger – says Confucius.

      Reply
      • Curly Was The Smart Stooge

        3 years ago

        @Yankee Cotard’s delusion, also known as walking corpse syndrome or Cotard’s syndrome, is a rare mental disorder in which the affected person holds the delusional belief that they are dead, do not exist, are putrefying, or have lost their blood or internal organs.[1] Statistical analysis of a hundred-patient cohort indicated that denial of self-existence is present in 45% of the cases of Cotard’s syndrome; the other 55% of the patients presented with delusions of immortality.[2]
        @Yankee Walking Dead? I’m speechless

        1
        Reply
  4. Curly Was The Smart Stooge

    3 years ago

    @Yankee Clipper, for the first time on this site, you’ve left me speechless, & wanting to lock my front door (& every other damn door)

    2
    Reply
  5. algionfriddo

    3 years ago

    Any chance the A’s might have an interest in Mitch White (LAD)? The Dodgers don’t make much use of him. A starting gig with the A’s might be just the thing.

    2
    Reply
  6. KamKid

    3 years ago

    A’s fans impressions of Logue so far? He’s the one guy I didn’t like included in that trade from Toronto’s perspective.

    Reply

Leave a Reply Cancel reply

Please login to leave a reply.

Log in Register

    Top Stories

    Red Sox Release Walker Buehler

    Cardinals To Promote Jimmy Crooks

    Pirates Place Isiah Kiner-Falefa On Outright Waivers

    Red Sox To Promote Payton Tolle

    Corey Seager To Undergo Appendectomy, Not Ruled Out For Season

    Frankie Montas To Undergo UCL Surgery

    Guardians Release Carlos Santana

    Brewers Place Trevor Megill On IL Due To Flexor Strain, Sign Erick Fedde

    Guardians Place Carlos Santana On Outright Waivers

    Pirates Designate Andrew Heaney For Assignment

    Astros Reinstate Yordan Alvarez From Injured List

    Nathan Eovaldi Likely Out For Season Due To Rotator Cuff Strain

    Mets To Promote Jonah Tong

    BBWAA To Institute Relief Pitcher Of The Year Award In 2026

    Zack Wheeler Recommended For Thoracic Outlet Syndrome Surgery

    Frankie Montas Done For 2025 Due To “Pretty Significant” UCL Injury

    Orioles Extend Samuel Basallo

    Astros Sign Craig Kimbrel

    Pirates Promote Bubba Chandler

    Evan Carter Diagnosed With Fractured Wrist

    Recent

    Red Sox Release Walker Buehler

    Cardinals To Promote Jimmy Crooks

    Víctor Robles Suspension Reduced To Seven Games

    Pirates Place Isiah Kiner-Falefa On Outright Waivers

    Diamondbacks Release Rene Pinto

    Front Office Subscriber Chat With Anthony Franco: TODAY At 2:00pm Central

    Braves Select John Brebbia

    Blue Jays, Eloy Jimenez Agree To Minor League Deal

    The Opener: Sale, Tolle, Tong

    Red Sox To Promote Payton Tolle

    MLBTR Newsletter - Hot stove highlights in your inbox, five days a week

    Latest Rumors & News

    Latest Rumors & News

    • Every MLB Trade In July
    Trade Rumors App for iOS and Android App Store Google Play

    MLBTR Features

    MLBTR Features

    • Remove Ads, Support Our Writers
    • Front Office Originals
    • Front Office Fantasy Baseball
    • MLBTR Podcast
    • 2025-26 MLB Free Agent List
    • 2026-27 MLB Free Agent List
    • Contract Tracker
    • Transaction Tracker
    • Extension Tracker
    • Agency Database
    • MLBTR On Twitter
    • MLBTR On Facebook
    • Team Facebook Pages
    • How To Set Up Notifications For Breaking News
    • Hoops Rumors
    • Pro Football Rumors
    • Pro Hockey Rumors

    Rumors By Team

    • Angels Rumors
    • Astros Rumors
    • Athletics Rumors
    • Blue Jays Rumors
    • Braves Rumors
    • Brewers Rumors
    • Cardinals Rumors
    • Cubs Rumors
    • Diamondbacks Rumors
    • Dodgers Rumors
    • Giants Rumors
    • Guardians Rumors
    • Mariners Rumors
    • Marlins Rumors
    • Mets Rumors
    • Nationals Rumors
    • Orioles Rumors
    • Padres Rumors
    • Phillies Rumors
    • Pirates Rumors
    • Rangers Rumors
    • Rays Rumors
    • Red Sox Rumors
    • Reds Rumors
    • Rockies Rumors
    • Royals Rumors
    • Tigers Rumors
    • Twins Rumors
    • White Sox Rumors
    • Yankees Rumors

    Navigation

    • Sitemap
    • Archives
    • RSS/Twitter Feeds By Team

    MLBTR INFO

    • Advertise
    • About
    • Commenting Policy
    • Privacy Policy

    Connect

    • Contact Us
    • Twitter
    • Facebook
    • RSS Feed

    MLB Trade Rumors is not affiliated with Major League Baseball, MLB or MLB.com

    Do not Sell or Share My Personal Information

    hide arrows scroll to top

    Register

    Desktop Version | Switch To Mobile Version