Elieser Alexis Hernández (Eh-LEE-eh-ser;[1] born May 3, 1995) is a Venezuelan professional baseball pitcher for the LG Twins of the KBO League.

He has previously played in Major League Baseball (MLB) for the Miami Marlins, Los Angeles Dodgers, and Milwaukee Brewers.

Hernández signed with the Houston Astros as an international free agent in 2012, and made his MLB debut with the Marlins in 2018.

[3] He split the 2015 season between the Low-A Tri-City ValleyCats and the Single-A Quad Cities River Bandits, posting a 3–4 record and 3.12 ERA with 76 strikeouts in 66+1⁄3 innings of work.

[3] In 2020, Hernández earned the fifth starter spot in the Marlins rotation at the start of the pandemic shortened season[9] and pitched in six contests, registering a 3.16 ERA with 34 strikeouts in 25+2⁄3 innings pitched[10] He suffered a lat injury on September 1 and spent the rest of the season on the injured list.

[17] On November 18, 2022, the Marlins traded Hernández and Jeff Brigham to the New York Mets for Franklin Sanchez and a player to be named later (Jake Mangum) or cash considerations.

[18][19] He was initially optioned to the Triple-A Syracuse Mets in 2023, but suffered a right shoulder strain and was placed on the injured list to begin the year.

[33] On July 20, 2024, Hernández signed with the LG Twins of the KBO League as a replacement for Casey Kelly, who had been released.