JoJo Romero Bio
Joseph Abel Romero is a professional baseball pitcher for the St. Louis Cardinals of Major League Baseball. He previously pitched in MLB for the Philadelphia Phillies and represents the Mexico national baseball team. Romero made his major league debut in 2020 and has served primarily as a bullpen arm across multiple seasons, moving between the majors and Triple-A during his early career while recovering from injury and establishing a relief role with St. Louis.
Early Life and Background
Joseph Abel Romero was born on September 9, 1996, in Camarillo, California, and is the eldest of three children. He grew up in Southern California, and his family background includes Mexican heritage; his grandfather gave him the nickname JoJo. Romero has cited time spent watching his father play in a local Southern California baseball league as an early influence on his decision to pursue baseball.
Romero attended Oxnard High School in Oxnard, California, where he stood out as a high-school pitcher and hitter during his junior season. After high school he continued his development at the collegiate level, playing at the University of Nevada and later at Yavapai College before entering professional baseball.
Path to Baseball
Romero was selected by the Philadelphia Phillies in the fourth round, 107th overall, of the 2016 Major League Baseball draft. After signing with the Phillies, he began his professional career in the short-season ranks with the Williamsport Crosscutters. His early minor-league work established him as a promising prospect within the Phillies’ system.
Over the next seasons Romero advanced through Class A and Double-A, with strong strikeout totals and run prevention that attracted organizational attention. He posted a combined 10–3 record in 2017 with a sub-2.20 ERA across two levels and was recognized by the Phillies as a top minor-league pitcher, later earning a place on the club’s 40-man roster in November 2019.
JoJo Romero Career
Early Career (2020–2021)
Romero made his major league debut on August 21, 2020, appearing for the Philadelphia Phillies; in that debut appearance he struck out all three batters he faced. He finished the shortened 2020 season with a number of appearances out of the bullpen as he adapted to big-league hitters.
The following year Romero’s 2021 campaign was interrupted by elbow injury, and he underwent Tommy John surgery in May 2021, which ended his season. Prior to the surgery he had appeared in relief and recorded outings at the major-league level while the organization determined a long-term role for him as he recovered from the procedure.
Philadelphia Phillies Breakthrough (2022)
Romero returned to the Phillies’ active roster in mid-2022 following rehabilitation from Tommy John surgery, reentering major-league competition after an extended recovery. The club activated him from the injured list in July 2022 as he worked to regain his arm strength and command in live-game situations.
Shortly after his activation in 2022, Romero was traded to the St. Louis Cardinals in exchange for infielder Edmundo Sosa. The trade sent Romero to St. Louis where he was used out of the Cardinals bullpen down the stretch of the 2022 season, providing multiple-inning relief help and striking out hitters in short stints.
St. Louis Cardinals Era (2022–Present)
After joining the St. Louis Cardinals in 2022, Romero appeared in relief across the remainder of that season and established himself as a regular bullpen option. In 2023 he began the year optioned to Triple-A Memphis but was recalled to the major-league roster multiple times; a knee injury later placed him on the injured list and ended his 2023 season after 27 appearances for St. Louis.
Romero made the Cardinals’ Opening Day roster for 2024 and worked exclusively out of the bullpen for the season, appearing in 65 games with a 7–3 record and a 3.36 ERA while recording saves in relief opportunities late in games. In 2025 he remained a key relief piece, making another 65 appearances with a 2.07 ERA, contributing multiple saves and striking out hitters across 61 innings of work. Prior to the 2026 season the club and Romero avoided salary arbitration by agreeing to a contract for the upcoming year.
Driving Style and Strengths
Romero projects as a bullpen specialist with swing-and-miss ability, demonstrated by his career strikeout totals and the three strikeout inning in his major-league debut. He has shown the capacity to handle multiple innings in relief and to be used in late-inning situations, with a mix of pitches that produce groundballs and strikeouts when his command is sharp.
Notable Events and Milestones
Key milestones in Romero’s career include his major-league debut in August 2020 in which he struck out the side, his selection to the Phillies’ 40-man roster in 2019, his recovery from Tommy John surgery in 2021, his midseason trade to the St. Louis Cardinals in 2022, and his participation with the Mexico national baseball team at the 2023 World Baseball Classic.
JoJo Romero Career Wins
Across his major-league tenure through mid-2026 Romero compiled a win–loss record and counting statistics that reflect his role as a reliever. His career totals include double-digit wins and a strikeout total that underscores his ability to miss bats in relief appearances.
MLB Highlights
As of June 30, 2026, Romero’s MLB statistics include a 15–13 win–loss record, a 3.61 earned run average, and 219 strikeouts. Those numbers cover his time with the Philadelphia Phillies and the St. Louis Cardinals and capture his progress from a prospect to a relied-upon major-league bullpen arm.
Other Wins & Perfromances
In the minor leagues Romero produced strong results that helped accelerate his promotion through the Phillies’ system, including a 2017 combined season in which he posted a 10–3 record, a low earned run average, and 128 strikeouts across two levels. He also threw an eight-inning, one-hit outing for the Lakewood BlueClaws in May 2017, a performance cited as a sign of his potential.
JoJo Romero Family
Family Background and Baseball Lineage
Romero grew up in a baseball-involved family in Southern California, with early exposure to the game through his father’s participation in a local league. His grandfather’s pronunciation of his given name gave him the JoJo nickname that he has carried throughout his career.
Personal Life
Public details about Romero’s personal life emphasize his background and education: he attended Oxnard High School and continued at the University of Nevada and Yavapai College before entering professional baseball. He is of Mexican descent and has represented Mexico at the international level.
2025 Season Performance
During the 2025 season Romero served as a primary member of the Cardinals bullpen, appearing in 65 games and posting a 2.07 ERA with eight saves in nine opportunities while compiling 55 strikeouts over 61 innings. His 2025 performance reinforced his status as a late-inning option and a reliable multi-inning reliever in high-leverage situations.
The 2025 campaign also continued Romero’s trend of durability in appearances even as he handled varied leverage roles. Heading into 2026 he entered the season under a contract agreed with the Cardinals that avoided arbitration, positioning him to remain an important bullpen piece for the team.