Justin Martínez Biography: Age, Height, Net Worth, Parents, Wife, Salary, Contract, Stats, Instagram, Religion
Justin Martínez is a Dominican professional baseball pitcher who plays for the Arizona Diamondbacks in Major League Baseball (MLB).
Recognized for his powerful fastball and ability to generate strikeouts, he developed from an international amateur prospect into a major-league relief pitcher, earning recognition for his performances on the mound.
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| Wiki Facts & About Data | |
| Real Name: | Justin Martínez |
| Stage Name: | Justin Martinez |
| Born: | July 30, 2001 (age 25 years old) |
| Place of Birth: | Bonao, Dominican Republic |
| Nationality: | Dominican |
| Ethnicity: | Dominican |
| Height: | 6 feet 3 inches (190 cm) |
| Religion: | Christianity |
| Parents: | Mr. and Mrs. Martínez |
| Occupation: | Professional baseball pitcher |
| Net Worth: | $1 million |
Early life and education
Justin Martinez was born on July 30, 2001, in Bonao, Dominican Republic. He grew up in the Dominican Republic, where baseball offers opportunities for young athletes to pursue professional careers. Initially an outfielder, he displayed athletic ability and arm strength that encouraged scouts to develop him as a pitcher.
In March 2018, the Arizona Diamondbacks signed Martinez as an international free agent for a reported $50,000 signing bonus. He received his high-school equivalency diploma through the Diamondbacks’ educational program at their Dominican Republic academy in 2020, balancing academic development and professional baseball training.
Career
Justin Martinez began his professional career in 2018 in the Arizona Diamondbacks organization, competing in the Dominican Summer League. After transitioning from the outfield to pitching, he developed a powerful fastball and improved his secondary pitches. An elbow injury required Tommy John surgery in 2021, interrupting his progress before he returned to competition.
Martinez advanced through the minor leagues and delivered a strong performance in the 2022 Arizona Fall League, recording a 2.35 ERA and 13 strikeouts in 7⅔ innings. His progress earned him a place on the Fall Stars Game roster.
He made his MLB debut on July 7, 2023, against the Pittsburgh Pirates. In 2024, he became an important member of Arizona’s bullpen, posting a 2.48 ERA, recording 91 strikeouts and collecting eight saves across 64 appearances. He received the Arizona Diamondbacks Rookie of the Year award from the local chapter of the Baseball Writers’ Association of America.
In March 2025, Martinez agreed to a five-year contract extension covering the 2025–2029 seasons. After elbow surgery interrupted his 2025 campaign, he returned to major-league action in August 2026 and continued pitching for Arizona.
Awards and nominations
- Arizona Diamondbacks Rookie of the Year — 2024
- Arizona Fall League Fall Stars Game selection — 2022
- Northwest League Pitcher of the Month — September 2022
Social media
- Instagram: @justinmartinez._
Personal life
Justin Martinez, 25 years old, grew up in the Dominican Republic and pursued professional baseball after joining the Arizona Diamondbacks organization as a teenager. His development included a transition from outfield play to pitching, where his arm strength became a major asset.
Martinez has participated in community activities organized by the Diamondbacks, including a youth baseball camp at Chase Field in July 2024. He bats right-handed and throws right-handed. His height is 6 feet 3 inches (190 cm).
Net worth
Justin Martinez’s net worth is around $1 million USD. His primary income sources include professional baseball salaries, signing bonuses and contract earnings.
In March 2025, he signed a five-year extension valued at $18 million USD, covering the 2025–2029 seasons, alongside additional club options. His MLB career and long-term contract have established important sources of professional income.
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