BIOGRAPHY
Seranthony Domínguez was born November 25, 1994, in Esperanza, Dominican Republic. He is a pitcher in the MLB.
Domínguez signed with the Philadelphia Phillies as an international free agent in October 2011 for $25,000. He made his professional debut in 2012 with the DSL Phillies and spent the whole season with them, going 4-4 with a 3.48 ERA and 40 strikeouts in 67.1 innings in 15 games (11 starts). In 2013, he returned to the DSL where he compiled a 4-6 record and 2.96 ERA, and 58 strikeouts in 76 innings, in 14 starts. He led the Dominican Summer League in shutouts (2) and complete games (2). He played for the GCL Phillies, for whom he pitched to a 2-2 record and 3.12 ERA with 24 strikeouts in 26 relief innings pitched.
Domínguez was promoted to the Phillies on May 7, 2018, and made his MLB debut the same night. He became the only major league reliever in recorded baseball history (dating back to 1908) to record at least two outs and allow no runs, hits, or walks in his first five major-league appearances. He also became the first pitcher in recorded history to not allow a run, hit, or walk in his first six appearances. He recorded his first career save against the St. Louis Cardinals on May 19, and his first win on May 26. Domínguez tied the all-time record for most perfect appearances in a pitcher’s first 11 games and pitched more innings in those games than any of the other pitchers with whom he was tied. His 0.65 WHIP through the All-Star break (min. 30.0 IP) was the lowest ever by any Phillie.
In 2018 with the Phillies, he was 2-5 with 16 saves and a 2.95 ERA, and 74 strikeouts in 58 innings, averaging 11.5 strikeouts per 9 innings. Dominguez ranked in the top 25 in major league baseball (minimum 50 innings) in both strikeout rate and in ground-ball rate. He struck out 32% of batters, best among rookies with at least 55 innings pitched. He also limited all batters to a .156 batting average and 0.93 WHIP (each 4th-best among NL relievers with 50 or more innings pitched), and batters to a .163 batting average in “high-leverage” situations, as calculated by Baseball-Reference. Batters had a 66.4% contact percentage against him, second-lowest in the NL among pitchers with at least 50 innings pitched. His 16 saves tied Jack Meyer (1955) for the most by any Phillies rookie reliever. Baseball America named him to its 2018 MLB All-Rookie Team, and he was named to Baseball Digest's Rookie All-Star team.
In 2019 he was 3-0 with a 4.74 ERA in 24+2⁄3 innings over 27 relief appearances during which he struck out 29 batters, averaging 10.6 strikeouts per 9 innings.
On February 17, 2021, Dominguez was placed on the 60-day injured list as he continued to recover from Tommy John surgery. On September 1, Dominguez was activated from the injured list.
In the 2022 regular season, he was 6-5 with nine saves and a 3.00 ERA, as in 54 innings he struck out 61 batters over 54 relief appearances.
On February 16, 2023, Domínguez signed a two-year, $7.25 million contract extension with the Phillies.
