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Oakland A’s add Daulton Jefferies to 40-man roster, DFA Jharel Cotton

A new prospect joins the roster to avoid the Rule 5 draft.

Photo provided by Oakland A’s

The Oakland A’s added pitching prospect Daulton Jefferies to their 40-man roster on Wednesday, the team announced. To make room, fellow pitcher Jharel Cotton was designated for assignment.

Jefferies was added to the roster to protect him from the upcoming Rule 5 draft, which you can read more about here. The draft isn’t until December, but Wednesday was the deadline to add eligible prospects to the roster to protect them from being stolen by other teams. Jefferies was the 37th overall draft pick in 2016, as a post-1st-round supplemental choice.

The 24-year-old California native and UC Berkeley product ranked 17th on our preseason Community Prospect List last winter despite being mired in a long recovery from Tommy John surgery, but then had a breakout season in 2019 upon his return to health. The right-hander spent most of the summer in Double-A and posted a sparkling stat line, marked especially by a phenomenal strikeout-to-walk ratio.

Jefferies, 2019 AA: 3.66 ERA, 64 ip, 72 Ks, 7 BB, 7 HR, 3.19 FIP

His work came mostly in three-inning stints as he eased back into action from his long layoff. He hasn’t yet appeared in Triple-A.

As for Cotton, he also missed substantial time to Tommy John surgery, but he struggled mightily in his 2019 return, in a relief role in Triple-A. The right-hander made 29 starts for the A’s during the 2016-17 seasons before getting hurt. Over the next week he’ll either be traded, claimed on waivers, released, or accept a non-roster assignment to the minors.

Here’s the current 40-man roster. Players in italics haven’t yet debuted in MLB. Players with asterisks** are eligible for salary arbitration (non-tender deadline is Dec. 2).

Oakland A's 40-man roster
Pitchers Hitters

Frankie Montas (R)
Mike Fiers (R)
Chris Bassitt (R)**
Sean Manaea (L)**
Jesus Luzardo (L)
Paul Blackburn (R)
Daniel Mengden (R)
Daniel Gossett (R)
--Grant Holmes (R)
--Daulton Jefferies (R)
--James Kaprielian (R)


Liam Hendriks (R)**
Yusmeiro Petit (R)
Joakim Soria (R)
Blake Treinen (R)**
Lou Trivino (R)
J.B. Wendelken (R)
Ryan Buchter (L)**
T.J. McFarland (L)**
A.J. Puk (L)

Sean Murphy (R)
Josh Phegley (R)**
--Jonah Heim (S)


Matt Olson (L)
Jurickson Profar (S)**
Marcus Semien (R)**
Matt Chapman (R)
Sheldon Neuse (R)
Franklin Barreto (R)
--Jorge Mateo (R)


Khris Davis (R)
Mark Canha (R)**
Ramon Laureano (R)
Stephen Piscotty (R)
Robbie Grossman (S)**
Chad Pinder (R)**
Seth Brown (L)
Skye Bolt (S)
Dustin Fowler (L)
--Luis Barrera (L)