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Greg Weissert

Gregory R. Weissert (born February 4, 1995) is an American professional for the Red Sox of (MLB). Weissert attended , where he played for the ; in his junior season of 2016, he started all 14 games he appeared in, tying for the team lead with five wins while ranking second on the team in innings pitched (78.0) and strikeouts (82). He was selected by the Yankees in the 18th round (548th overall pick) of the 2016 MLB June Amateur Draft out of Fordham. After spending several years in the Yankees' minor league system, Weissert made his MLB debut with New York on August 25, 2022. On December 5, 2023, the Yankees traded him to the Red Sox—along with minor league pitchers and Nicholas Judice—in exchange for outfielder . Since joining , Weissert has appeared in over 100 relief outings through the 2025 season, posting a 2.97 ERA and 115 strikeouts in 134 appearances with the Red Sox.

Early life and amateur career

Upbringing and family background

Greg Weissert was born on February 4, 1995, in Bay Shore, New York. He grew up in the close-knit community of Bay Shore on Long Island, where he developed an early passion for baseball amid the region's strong youth sports culture. Weissert was raised by his parents, and , alongside his younger brother, , in a supportive family environment that encouraged his athletic interests. The siblings often played catch in their parents' backyard, fostering Weissert's love for the game from a young age and instilling a dream of pursuing professionally. His family provided unwavering encouragement, with his parents and brother regularly attending games and offering emotional backing throughout his journey. Weissert's early exposure to baseball came through local Long Island youth activities, where the sport's prominence in the area helped shape his foundational skills and enthusiasm. He graduated from Bay Shore High School in 2013, marking the end of his local upbringing before transitioning to at .

High school career

Greg Weissert attended Bay Shore High School in Bay Shore, , where he played from 2009 to 2013. He earned a as a right-handed and during his junior year in 2012, when he also served as a starter wearing number 6. Weissert's velocity consistently reached 86 , with a top speed of 89 , while his time was recorded at 7.0 seconds. In his sophomore season, he earned All-League honors and was selected to the 1st Team All-County. Weissert was nominated as a 2012 Top Prospect Player by Baseball Player Magazine and named among the Top 100 Players on . Rather than entering directly after graduation, Weissert opted to pursue to further develop his skills.

College career

Weissert attended from 2014 to 2016, where he played for the as a right-handed while majoring in with a concentration in . Over his three seasons with the Rams, Weissert compiled an 11-10 record with a 5.03 , logging 171.2 and 186 strikeouts. As a in 2014, he appeared in 15 games (two starts) with a 1-1 record, 9.19 , 31.1 innings, and 32 strikeouts. In 2015, his sophomore year, he improved to a 5-5 mark in 16 games (11 starts), posting a 4.33 over 62.1 innings with 72 strikeouts. His junior season in 2016 marked a breakout, as he started all 14 of his appearances, going 5-4 with a 4.04 , 78 , and a team-high 82 strikeouts. Weissert balanced his athletic commitments with academics, graduating from Fordham's in 2018 with a , completing remaining coursework after turning professional. Pre-draft evaluations highlighted his potential, which reached 93 mph, along with command of secondary pitches including a slider in the upper 70s mph range, positioning him as a strikeout-oriented starter in the Atlantic 10.

Professional career

Draft and minor league development

Weissert was selected by the Yankees in the 18th round (548th overall) of the 2016 June Amateur out of , following a junior season in which he recorded a 4.04 over 78 as a starter. He signed with the organization for a $75,000 bonus. Weissert transitioned immediately to a relief role in the minors, beginning his professional career with the Rookie-level before a midseason promotion to in 2016. There, he made 17 relief appearances, compiling a 2.84 with 25 strikeouts in 19 . In 2017, he pitched exclusively for the Short-Season A [Staten Island Yankees](/page/Staten Island_Yankees), where he posted a 4.13 across 28.1 and 34 strikeouts in 19 outings. Weissert's development continued in with a split between Single-A and , during which he established himself as a reliable arm, achieving a 3.12 , 86 strikeouts, and four saves over 60.2 in 36 appearances. He advanced further in 2019, starting at Tampa before promotion to Double-A Trenton , finishing the year with a 4.02 , 77 strikeouts, and four saves in 65 across 39 games. The 2020 minor league season was cancelled due to the , delaying further progress. Returning in 2021, Weissert split time between Double-A Somerset Patriots and Triple-A Scranton/Wilkes-Barre RailRiders, marking his first taste of the upper minors with a breakout performance: a 1.64 , 60 , and six saves in 49.1 over 40 relief outings, highlighted by a strikeout rate exceeding 10 per nine . In 2022, he remained with Scranton/Wilkes-Barre at Triple-A, solidifying his role as a closer with a 1.69 , 70 , and a league-leading 18 saves in 48 across 42 appearances. Throughout his tenure, Weissert honed a profile centered on a mid-90s —averaging 93 mph with enhanced sink and shape through Yankees coaching—and a rated as the best in the entering 2021. This focus on late-inning efficiency propelled his steady promotions from ball to Triple-A over six seasons.

New York Yankees

Weissert made his debut with the Yankees on August 25, 2022, entering in against the at . In a challenging outing, he hit the first batter he faced with a pitch, committed a that advanced the runner, and then hit another batter, allowing two unearned runs without recording an out before being removed. Despite the rough start, Weissert rebounded quickly, earning his first career win five days later on August 30 against the , where he pitched two scoreless innings in a 7–4 victory. During the 2022 season, Weissert appeared in 12 outings across two stints with the Yankees, posting a 3–0 record with a 5.56 over 11⅓ and 11 strikeouts. His performance provided glimpses of potential in high-leverage situations, though he was optioned back to Triple-A Scranton/Wilkes-Barre RailRiders late in the year after a strong campaign that included being named the Pitcher of the Year. In 2023, Weissert served primarily as a middle reliever for the Yankees, making 17 appearances over five stints with the club after multiple recalls from Triple-A. He recorded a 4.05 in 20 innings pitched, with 22 strikeouts, no decisions, and two holds, including 11 scoreless outings and four multi-inning appearances that highlighted his versatility in the bullpen. On December 5, 2023, the Yankees traded Weissert, along with minor league prospects and Nicholas Judice, to the Boston Red Sox in exchange for outfielder .

Boston Red Sox

Weissert joined the Boston Red Sox via trade from the New York Yankees on December 5, 2023, in exchange for outfielder along with minor league pitchers and Nicholas Judice. In 2024, Weissert transitioned seamlessly into a full-time relief role with the Red Sox, appearing in 62 games and leading the team in relief innings pitched at 63.1 while posting a 3.13 and 1.34 . He recorded 58 strikeouts and earned his first save on July 4, 2024, against the , retiring Josh Bell with two runners on in the 12th inning of a 6-5 . Frequently utilized in high-leverage situations, Weissert contributed to Boston's stability by limiting opponents to a .274 against and leading the team with 43 scoreless appearances. Weissert's performance elevated further in , where he made 72 appearances—tops among Red Sox relievers—and delivered a standout 2.82 over 67 with a 1.16 , 57 strikeouts, and 4 saves. His command sharpened, evidenced by a career-low walk rate of 7.6% and a 7.7 K/9 rate, helping him induce a 41.3% ground-ball rate while holding opponents to a .227 . Weissert was honored as the Red Sox Reliever of the Year for his workload and reliability, leading the team in outings with zero earned runs allowed (49) and solidifying his value in late-game scenarios. As a and occasional closer candidate, Weissert has been pivotal in high-pressure spots, including earning a on June 15, 2025, against the Yankees in a 4-3 win by navigating a one-run lead in the ninth despite allowing two hits. He also struck out three Yankees batters in a scoreless frame on June 7, 2025, underscoring his effectiveness against his former club. Over his Red Sox tenure, these contributions have positioned him as a durable bridge to the ninth inning, particularly when primary closers like were unavailable. In the 2025 postseason, Weissert made one relief appearance, allowing no runs. Weissert's arsenal centers on a averaging 94.1 , which he ramped up to 33.6% usage in 2025 for better deception, complemented by a at 84 that boasts high rates and induces whiffs. This mix has limited hard-hit balls to 38.6% and barrels to 7.6%, enhancing his ground-ball tendencies and overall effectiveness in the .

Personal life

Family and marriage

Greg Weissert married Abigail Weissert. The couple shares activities such as and walking with their rescued lab-pit mix dog, Willow. Weissert's parents, Raymond and Elizabeth Weissert, raised him alongside his brother in Bay Shore, New York. In June 2025, his parents and brother attended a Yankees-Red Sox matchup at to support him after his trade to .

Offseason residence and interests

During the offseason, Greg Weissert resides in , with his wife Abigail. This coastal community provides a relaxed setting away from the demands of , allowing him to recharge before . Weissert enjoys outdoor activities as a way to unwind and maintain balance between his professional career and personal life. He has described himself as obsessed with , calling it his favorite hobby, and makes time to play weekly when possible, often watching events for inspiration. Additionally, he and his wife frequently take their rescued lab-pit mix dog on hikes or walks, which he views as therapeutic routines that help clear his mind after intense seasons. These pursuits reflect Weissert's emphasis on family time and simple pleasures in , where he has established a home base since his minor league days with the Yankees' affiliate in nearby . While he maintains connections to his roots through occasional visits, his offseason focuses on recovery and preparation in the Lowcountry environment.

References

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    2013 GRAD | RHP/IF | Bay Shore, NY MLB DRAFT ROUND 18 - 2016 × DRAFT HISTORY Round 18 by Yankees in 2016 Close MLB DEBUTED Aug 25, 2022
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    My name is Greg Weissert and I'm currently a junior at Bay Shore High School. I maintain honor roll grades while taking advanced courses.
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    Position: Relief Pitcher ; Bats: Right • Throws: Right ; Team: Boston Red Sox (majors) ; Born: February 4, 1995 in Bay Shore, NY us ; Draft: Drafted by the New York ...
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    ... home of Charleston, South Carolina, over the offseason. “The toughest part of all of this is when you know somebody really wants it and you put the work in ...