Sean Reynolds Bio
Sean William Reynolds (born April 19, 1998) is an American professional baseball pitcher for the Yokohama DeNA BayStars of Nippon Professional Baseball (NPB). He has previously played in Major League Baseball (MLB) for the San Diego Padres. Reynolds began his career as a position player before transitioning to the mound, and his professional journey has taken him from the lower levels of the Miami Marlins organization to the major leagues and now to Japan.
Early Life and Background
Sean William Reynolds grew up in the Southern California baseball community and attended Redondo Union High School in Redondo Beach, California. He developed as a multi-sport athlete in that coastal setting, where year-round play and a strong amateur circuit helped shape his baseball skills. Coming out of high school, Reynolds drew the attention of professional scouts with his offensive profile.
He was selected by the Miami Marlins in the fourth round, with the 113th overall pick, of the 2016 Major League Baseball draft, choosing to turn pro rather than attend college. That decision launched a path that would eventually reshape his role on the field. Reynolds spent his teenage years balancing school with travel ball, and his draft placement reflected the upside evaluators saw in his bat and athleticism.
Path to Baseball
Reynolds began his professional career as a first baseman and outfielder within the Marlins’ farm system. He made his debut with the rookie-level Gulf Coast League Marlins, batting .155 in 42 games, and continued to work his way up the lower minors. Over the next several seasons, he split time between the GCL Marlins, the Low-A Batavia Muckdogs, and the Single-A Clinton LumberKings, gradually adjusting to professional pitching.
After four years as a position player, Reynolds converted into a pitcher in 2021, a transition that revitalized his career. Working primarily as a reliever in the Marlins’ system, he advanced through the High-A Beloit Sky Carp, the Double-A Pensacola Blue Wahoos, and the Triple-A Jacksonville Jumbo Shrimp. On November 10, 2022, the Marlins added him to their 40-man roster to protect him from the Rule 5 draft, and on July 7, 2023, he was promoted to the major leagues for the first time.
Sean Reynolds Career
Early Career (2016–2020)
Reynolds’ first four professional seasons were spent in the Marlins’ system as a first baseman and outfielder. He split 2017 between the GCL Marlins and Low-A Batavia, hitting .198/.269/.350 with five home runs and 24 RBI across 51 combined appearances. In 2018, he returned to Batavia and played 76 games, slashing .193/.306/.441 with 17 home runs, 52 RBI, and 13 stolen bases.
In 2019, Reynolds split the year between Batavia and Single-A Clinton, accumulating a .172/.291/.348 batting line with 13 home runs, 45 RBI, and 11 stolen bases across 96 games. Reynolds did not play in 2020 after the minor league season was canceled because of the COVID-19 pandemic, a pause that ultimately preceded his move to the mound.
Miami Marlins Conversion (2021–2023)
After converting to pitching in 2021, Reynolds appeared in 19 games for the Single-A Jupiter Hammerheads, going 2–1 with a 3.09 ERA and 37 strikeouts across 32 innings. He split 2022 between High-A Beloit and Double-A Pensacola, compiling a cumulative 4.13 ERA with 66 strikeouts and 10 saves over 52+1⁄3 innings, showing enough arm strength to earn a spot on the 40-man roster that offseason.
Optioned to Double-A Pensacola to open 2023, Reynolds moved to Triple-A Jacksonville and posted a 2.66 ERA with 47 strikeouts and 11 saves in 40+2⁄3 innings across 31 appearances. He was promoted to the major leagues for the first time on July 7, 2023, though he went unused out of the bullpen and was optioned back to Jacksonville on July 10, a brief cameo that still marked his MLB arrival.
San Diego Padres Era (2023–2025)
On August 1, 2023, Reynolds was traded, along with Garrett Cooper, to the San Diego Padres in exchange for Ryan Weathers. He made 17 appearances for the Triple-A El Paso Chihuahuas but struggled to a 13.50 ERA with 19 strikeouts in 16 innings, working to adjust to a new organization late in the year.
Reynolds returned to Triple-A El Paso to begin 2024 and was promoted to the majors for the first time as a Padre on July 12, 2024. In nine appearances during his rookie campaign, he recorded a 0.82 ERA with 21 strikeouts over 11 innings, flashing a strong slider and missing bats against big-league hitters. In 2025, he logged 19 appearances for San Diego with an 0–1 record and a 5.33 ERA, recording 25 strikeouts over 27 innings. On November 21, 2025, he was non-tendered by San Diego and became a free agent.
Notable Events and Milestones
Reynolds’ transition from position player to pitcher in 2021 stands as the most defining moment of his career, turning a stalled bat path into an MLB opportunity. His MLB debut on July 7, 2023, with Miami, the subsequent trade to San Diego on August 1, 2023, and his first Padres appearance on July 12, 2024, each marked meaningful steps. His 0.82 ERA as a rookie reliever in 2024 highlighted his late-inning potential.
Sean Reynolds Career Wins
Across his professional career, Reynolds has accumulated wins at multiple levels of professional baseball, beginning with two pitching wins in 2021 at Single-A Jupiter. His major league work with the Padres produced no regular-season pitching decisions, and his most recent win totals have come with the Yokohama DeNA BayStars in NPB, where his cumulative record reflects his current role.
NPB Highlights
Reynolds signed with the Yokohama DeNA BayStars of Nippon Professional Baseball on December 12, 2025, after being non-tendered by San Diego. Through May 20, 2026, he had posted a 2–0 record with a 2.37 ERA and 29 strikeouts, emerging as an effective arm in the BayStars’ pitching staff and signaling a strong start to his Japanese career.
Other Wins & Performances
In the minor leagues, Reynolds earned 10 saves across the 2022 season between High-A Beloit and Double-A Pensacola, then added 11 more saves in 2023 between Pensacola and Triple-A Jacksonville, demonstrating his value as a multi-inning reliever before his MLB debut.
Sean Reynolds Family
Family Background and Racing Lineage
Public information about Sean William Reynolds’ family background is limited, and detailed records of his parents and siblings have not been publicly confirmed.
Personal Life
Reynolds grew up in Redondo Beach, California, the area that shaped his early baseball development. He has kept his personal life largely private as he has moved between organizations and now leagues, with no public details about a spouse or children having been confirmed.
2025 Season Performance
The 2025 season was a transitional year for Reynolds with the San Diego Padres, as he made 19 appearances out of the bullpen and logged a 5.33 ERA with 25 strikeouts over 27 innings, going 0–1. His role fluctuated between middle relief and lower-leverage work, and the organization ultimately decided to non-tender him on November 21, 2025, making him a free agent. Across his MLB career through 2025, Reynolds had a 0–1 record, a 4.03 ERA, and 46 strikeouts.
Shortly after being non-tendered, Reynolds signed with the Yokohama DeNA BayStars of NPB on December 12, 2025, opening a new chapter in his career. Through May 20, 2026, his NPB line of a 2–0 record, 2.37 ERA, and 29 strikeouts suggested that the change of scenery and a defined bullpen role suited him well. The outlook for 2025 and beyond centers on continuing to refine his command, build on his early NPB success, and establish himself as a reliable late-inning option for the BayStars.