PITTSBURGH -- The Pirates announced on Friday that they have reached a one-year agreement with right-handed pitchers Mitch Keller, JT Brubaker, Robert Stephenson and Duane Underwood Jr., each of whom avoided salary arbitration.

Pittsburgh did not reach an agreement with November trade acquisition Ji-Man Choi prior to Friday's deadline, meaning the two sides will exchange salary figures and have a hearing before a three-person panel of arbitrators in February if no deal is struck in the interim. 

Keller will earn $2.4375 million, Brubaker will earn $2.275 million, Stephenson will earn $1.75 million and Underwood Jr. will earn $1.025 million, a source told MLB.com.

Miguel Andújar, another arbitration-eligible player, agreed to a one-year, $1.525 million deal with the Pirates in November. 

Keller, who will turn 27 in April, posted a 3.91 ERA and a 3.99 FIP in 2022, with career bests in innings (159), strikeouts (138) and fWAR (2.1). He has two years of arbitration eligibility remaining. 

Brubaker, 29, also enjoyed a career year, recording bests in ERA (4.69), FIP (3.92), innings (144), strikeouts (147) and fWAR (1.9). Brubaker also has two years remaining of arbitration eligibility.

Stephenson, who turns 30 in February, impressed upon joining the Pirates as a waiver claim in August. Across 13 1/3 innings with Pittsburgh, Stephenson had a 3.38 ERA and a 2.81 FIP with 18 strikeouts to one walk. This is Stephenson's third and final year of arbitration eligibility.

Underwood Jr., 28, had a 4.40 ERA and a 2.92 FIP across 57 1/3 innings last season, appearing in a career-high 51 games. He has two years of arbitration eligibility left beyond this season.

Choi, 31, made $3.2 million with the Rays last season and is entering his final year of arbitration. Choi revealed in November that he planned to undergo minor surgery on his right elbow, but noted that he would be ready for Spring Training. In 2022, Choi hit .233/.341/.388 with 11 home runs and a 116 wRC+. 

The Pirates also signed outfielder Andrew McCutchen to a one-year, $5 million deal -- pending a physical -- per source, bringing the 2013 NL MVP back to his first franchise.