What we know:

-Left-hander

-MLB experience, played in Mexico in 2019

-Not Felix Doubront, Brett Oberholtzer and Christian Friedrich

LMB (Summer league)

Acereros de Monclova:

-Darin Downs

-Jason Gurka

-Brian Matusz

-Zach Phillips (Spent the season as a reliever)

Toros de Tijuana:

-Horacio Ramirez (Spent the season as a reliever)

-James Russell

-Raúl Valdés

Sultanes de Monterrey:

-Logan Darnell

-Anthony Vasquez

Saraperos de Saltillo:

-Raudel Lazo (Spent the season as a reliever)

-Kelvin Marte

-Jonathan Sanchez

Tecolotes de Los Laredos:

-None

Rieleros de Aguascalientes:

-None

Generales de Durango:

-Cesar Jimenez

Algodoneros de Union Laguna:

-Yohan Flande

-Frank Garces

Diablos Rojos del Mexico:

-Andrew Faulkner (Spent the season as a reliever)

-Arturo Lopez

-Jose Valdez (Spent the season as a reliever)

Guerreros de Oaxaca:

-Edward Paredes (Spent the season as a reliever)

-Dario Alvarez

-Manny Parra (Spent the season as a reliever)

Tigres de Quintana Roo:

-None

Pericos de Puebla:

-Buddy Boshers (Spent the season as a reliever)

Piratas de Campeche:

-Frank Garces

-Wil Ledezma (Spent the season as a reliever)

-Josh Outman

Bravos de Leon:

-None

Olmecas de Tabasco:

-None

​

My guess is probably James Russell or Jonathan Sanchez, since they had the most successful seasons.