After receiving a second opinion, A’s right-hander Daulton Jefferies is scheduled to undergo thoracic outlet surgery on Monday per Matt Kawahara of The San Francisco Chronicle. Oakland will share more details about Jefferies’ recovery timetable after the surgery is completed.
The surgery decision comes as little surprise after the 26-year-old Jefferies was placed on the 15-day IL a few weeks ago. A subsequent move to the 60-day IL largely dashed any chance that the right-handed pitcher would return to the hill in short order.
For the time being, the A’s appear set to roll with a rotation headed by Frankie Montas, Cole Irvin, and Paul Blackburn who are all off to strong starts this season. James Kaprielian and Jared Koenig, who was called up this past Sunday, present a pair of interesting options to hold down the fort at the back of the rotation.
While that group will hardly stand in the way of Jefferies receiving future looks in the rotation— he has first-round pedigree and strong peripherals working in his favor— the last place A’s have no urgency to rush him back. More pressing for the organization is the recovery of a player under five additional years of team control.
As has been discussed ad nauseam when it comes to any major procedure like TOS surgery, nothing is guaranteed in terms of pitching success upon recovery. D-backs starter Merrill Kelly and Chris Archer of the Twins are both years removed from the procedure and having modest success out of the rotation this year. Past pitchers haven’t always rebounded as decently however, as former Padres starter Tyson Ross, for example, saw a promising career derailed by the procedure. More recently, Nationals reliever Will Harris underwent the procedure in May of 2021 but has yet to return this season.