Espinal begins his first season with the Ducks and 10th in professional baseball. The pitcher spent parts of two seasons in the Major Leagues, pitching with the Boston Red Sox in 2021 and the Cincinnati Reds in 2022. He made his big league debut on August 30, 2021, at Tampa Bay with two innings of relief, and he struck out five batters over four and two-thirds innings in 2022. In addition to the Red Sox and Reds, the 32-year-old has pitched in the New York Yankees, San Francisco Giants and Chicago Cubs organizations, reaching the Triple-A level with each. Espinal was named the MiLB.com Fans’ Choice for Best Relief Pitcher in 2017 with Trenton (AA, Yankees) and an MiLB.com Organization All-Star in 2021 with the Red Sox.

In 189 appearances (72 starts) during his minor league career, the Dominican Republic native has compiled a 40-34 record with a 3.75 ERA and 17 saves. Over 571.1 innings of work, he has struck out 654 batters while walking 190. Most recently, the righty pitched in Japan with the Yakult Swallows during the 2023 season. He combined to make 30 appearances (three starts) in the Japan Eastern League and Japan Central League, going 3-5 with a 5.37 ERA. Previously, he pitched with the Dominican Republic national baseball team during qualification for the 2020 Summer Olympics. Espinal was originally signed by the Yankees as an international free agent in 2012.