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Former SF Giants infielder Jason Vosler signs with Mariners

After spending the past two years in the SF Giants organization, corner bat Jason Vosler has inked a minor-league deal with the Seattle Mariners.

Marc Delucchi

Former SF Giants infielder Jason Vosler signs with Mariners
Former SF Giants infielder Jason Vosler signs with Mariners /
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After spending the past two years in the SF Giants organization, Jason Vosler has inked a minor-league deal with the Mariners. Vosler will likely compete for a spot on the end of Seattle's bench in spring training but is probably ticketed for their Triple-A affiliate in Tacoma.

SF Giants infielder Jason Vosler tosses his bat after earning a walk. (2022)
SF Giants infielder Jason Vosler tosses his bat after earning a walk. (2022) / Kelley L Cox-USA TODAY Sports

Vosler split his time between the Giants and their Triple-A affiliate in Sacramento in 2022. He was very productive in 36 big-league games, hitting .265/.342/.469 with six doubles, a triple, and four home runs. However, he had the worst statistical season of his career at Triple-A (.242/.311/.433 line), and the Giants were clearly skeptical of his ability to maintain his MLB production over a larger sample size.

The Giants first signed Vosler to a big-league contract following the 2020 season. Vosler had yet to make his MLB debut but had a strong minor-league track record and had just struggled to get an opportunity as a primary third baseman in the Padres and Cubs' organizations, stuck behind Manny Machado and Kris Bryant.

Vosler has improved his defensive versatility, holding his own at second and first base alongside the hot corner. The Giants also experimented with him in left field, although, he struggled mightily. Between MLB stints with the Giants in 2021 and 2022, the left-handed hitter has a roughly league-average triple-slash of .228/.306/.421 with ten doubles and seven home runs in 193 plate appearances with the Giants.

Another former Giants infielder who signed with the Mariners this offseason, Tommy La Stella, is set to be Seattle's left-handed-hitting utility infielder. However, given La Stella's injury history, there's a good chance that the Mariners will need another left-handed hitting infielder at some point in the season.

Vosler's biggest competition for playing time will be veteran third baseman Colin Moran. Moran has appeared in each of the past seven MLB seasons, but has regressed offensively in recent years. 

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Marc Delucchi
MARC DELUCCHI

Marc Delucchi (he/they/she) serves as the Managing Editor at Giants Baseball Insider, leading their SF Giants coverage. As a freelance journalist, he has previously covered the San Francisco Giants at Around the Foghorn and McCovey Chronicles. He also currently contributes to Niners Nation, Golden State of Mind, and Baseball Prospectus. He has previously been featured in several other publications, including SFGate, ProFootballRumors, Niners Wire, GrandStand Central, Call to the Pen, and Just Baseball. Over his journalistic career, Marc has conducted investigations into how one prep baseball player lost a college opportunity during the pandemic (Baseball Prospectus) and the rampant mistreatment of players at the University of Hawaii football program under former head coach Todd Graham (SFGate). He has also broken dozens of news stories around professional baseball, primarily around the SF Giants organization, including the draft signing of Kyle Harrison, injuries and promotions to top prospects like Heliot Ramos, and trade details in the Kris Bryant deal. Marc received a Bachelor's degree from Kenyon College with a major in economics and a minor in Spanish. During his time in college, he conducted a summer research project attempting to predict the future minor-league performance of NCAA hitters, worked as a data analyst for the school's Women's basketball team, and worked as a play-by-play announcer/color commentator for the basketball, baseball, softball, and soccer teams. He also worked as an amateur baseball scout with the Collegiate Baseball Scouting Network (later renamed Evolution Metrix), scouting high school and college players for three draft cycles. For tips and inquiries, feel free to reach out to Marc directly on Twitter or via email (delucchimarc@gmail.com).

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