Sean Reynolds Bio
Sean William Reynolds, born on April 19, 1998, is an American professional baseball pitcher who currently plays for the Yokohama DeNA BayStars of Nippon Professional Baseball (NPB). He previously pitched in Major League Baseball (MLB) for the San Diego Padres after being developed in the minor league systems of the Miami Marlins and San Diego organizations. Reynolds is recognized for an unusual career path, having transitioned from a position player to a pitcher during the early 2020s.
Early Life and Background
Sean William Reynolds was born on April 19, 1998, and grew up in the United States, where he developed an early interest in baseball. He attended Redondo Union High School in Redondo Beach, California, where his performance on the field drew the attention of professional scouts. Coming out of high school, Reynolds was considered a promising hitting prospect with versatility as a position player.
During his high school years, Reynolds played multiple positions and showed the kind of athleticism that often translates into a long minor league journey. His selection in the 2016 Major League Baseball draft reflected the Marlins’ belief in his raw offensive tools. Reynolds was known among teammates and coaches for his work ethic and his willingness to take on new challenges on the diamond.
Path to Baseball
Reynolds was drafted by the Miami Marlins in the fourth round, with the 113th overall selection, of the 2016 Major League Baseball draft, marking the formal start of his professional career. He made his professional debut that summer with the rookie-level Gulf Coast League Marlins, batting .155 across 42 games as he adjusted to the speed and sophistication of pro pitching.
In 2017, Reynolds split the campaign between the Gulf Coast League Marlins and the Low-A Batavia Muckdogs, hitting a combined .198 with five home runs and 24 runs batted in (RBI) over 51 appearances. He returned to Batavia in 2018 and put together a more powerful season, slashing .193/.306/.441 with 17 home runs, 52 RBI, and 13 stolen bases across 76 games. The following year, Reynolds split 2019 between Batavia and the Single-A Clinton LumberKings, posting a .172/.291/.348 line with 13 home runs and 45 RBI in 96 games.
Reynolds did not appear in a game in 2020 after the minor league season was canceled because of the COVID-19 pandemic. The pause proved pivotal, because when play resumed in 2021, the organization decided to convert him from a first baseman and outfielder into a pitcher, a transition that would ultimately define the next chapter of his career.
Sean Reynolds Career
Early Career (2016-2020)
Sean William Reynolds spent his first four professional seasons as a position player in the Miami Marlins system, working his way through the lower levels of the minors. Across the Gulf Coast League, Batavia, and Clinton, he showed occasional pop at the plate, peaking with 17 home runs in 2018, but his batting averages remained modest and his on-base production lagged.
The 2020 cancellation cost him a full development year, and by the time organized play returned, the Marlins had decided that his future lay on the mound rather than in the field. That decision set the stage for a rapid repositioning of his skill set.
Pitching Conversion and Marlins Development (2021-2023)
After spending his first four years as a first baseman and outfielder, Reynolds converted into a pitcher in 2021 and immediately showed promise. In 19 games for the Single-A Jupiter Hammerheads, he recorded a 2-1 record and a 3.09 earned run average (ERA) with 37 strikeouts across 32 innings, an encouraging debut for a throwing program still in its infancy.
Reynolds split the 2022 season between the High-A Beloit Sky Carp and the Double-A Pensacola Blue Wahoos, compiling a cumulative 4.13 ERA and 66 strikeouts with 10 saves over 52 and one-third innings pitched. On November 10, 2022, the Marlins added Reynolds to their 40-man roster to protect him from the Rule 5 draft, a strong signal that the organization viewed him as a legitimate bullpen piece.
Reynolds was optioned to Double-A Pensacola to begin the 2023 season. In 31 appearances split between Pensacola and the Triple-A Jacksonville Jumbo Shrimp, he registered a cumulative 2.66 ERA with 47 strikeouts and 11 saves in 40 and two-thirds innings pitched. On July 7, 2023, Reynolds was promoted to the major leagues for the first time. He went unused out of the bullpen and was optioned back to Jacksonville on July 10, becoming a phantom ballplayer for a brief stretch.
San Diego Padres Era (2023-2025)
On August 1, 2023, Reynolds and Garrett Cooper were traded to the San Diego Padres in exchange for Ryan Weathers, giving him a fresh start in a new organization. He made 17 appearances for the Triple-A El Paso Chihuahuas, but struggled to a 13.50 ERA with 19 strikeouts in 16 innings as he worked to refine his command on the mound.
Reynolds was optioned to Triple-A El Paso to begin the 2024 season. On July 12, 2024, he was promoted to the major leagues for the first time as a Padre. He made nine appearances for San Diego during his rookie campaign, recording a 0.82 ERA with 21 strikeouts over 11 innings of work, a dominant stretch that announced his arrival as a credible big-league reliever.
Reynolds made 19 appearances for the Padres in 2025, logging an 0-1 record and 5.33 ERA with 25 strikeouts over 27 innings of work. On November 21, 2025, he was non-tendered by San Diego and became a free agent, closing out his MLB chapter with the franchise.
Yokohama DeNA BayStars Era (2025-Present)
On December 12, 2025, Reynolds signed with the Yokohama DeNA BayStars of Nippon Professional Baseball, taking his career international. The move gave him an opportunity to log meaningful innings in Japan after an uneven final MLB season with San Diego.
Driving Style and Strengths
Reynolds is best known for his strikeout ability out of the bullpen, a skill he developed rapidly after switching to pitching. His 0.82 ERA across 11 innings in his 2024 MLB debut with San Diego highlighted his capacity to miss bats and limit damage in short stints, traits that figure to travel well to the NPB level.
Notable Events and Milestones
Key moments in Reynolds’s career include his 2016 fourth-round selection by the Marlins, his late-2022 addition to the Marlins 40-man roster, his July 2024 MLB debut with the Padres, and his December 2025 signing with the Yokohama DeNA BayStars. Each step marked a meaningful milestone in an unconventional path from position prospect to international reliever.
Sean Reynolds Family
Family Background and Racing Lineage
Public details about Sean William Reynolds’s family background are limited, and verified information about his parents, siblings, or any racing lineage is not available. He is recognized primarily for his individual development as a two-way prospect turned pitcher.
Personal Life
Reynolds maintains a presence on social media, including an Instagram account under the handle sean__reynolds, where he shares updates from his baseball career. Further verified details about a spouse, children, or current residence have not been publicly confirmed.
2025 Season Performance
Sean William Reynolds spent the 2025 season in the San Diego Padres organization after his encouraging 2024 rookie stint. He appeared in 19 games for the Padres, posting an 0-1 record and a 5.63 ERA with 25 strikeouts across 27 innings, a noticeable step back from his sub-one-ERA debut year.
Despite the elevated ERA, Reynolds continued to demonstrate swing-and-miss stuff, averaging nearly a strikeout per inning, and remained a part of the Padres’ bullpen depth chart for much of the summer. His usage in middle relief underscored the organization’s continued belief in his arm.
On November 21, 2025, Reynolds was non-tendered by San Diego and became a free agent, and on December 12, 2025, he signed with the Yokohama DeNA BayStars of Nippon Professional Baseball. The move opens a new chapter for Reynolds in Japan, where he is expected to compete for a role in the BayStars’ bullpen in 2026 and beyond.