J. D. Hammer

J. D. Hammer
Hammer with the Phillies in 2019
Free agent
Pitcher
Born: (1994-07-12) July 12, 1994 (age 30) Fort Collins, Colorado, U.S.
Bats: Right Throws: Right
MLB debut
May 26, 2019, for the Philadelphia Phillies
MLB statistics (through 2021 season)
Win–loss record	2–1
Earned run average	4.38
Strikeouts	35
Stats at Baseball Reference
Teams
Philadelphia Phillies (2019, 2021)

John Dale Hammer (born July 12, 1994) is an American professional baseball pitcher who is a free agent. He has previously played in Major League Baseball (MLB) for the Philadelphia Phillies.

Hammer was born in Fort Collins, Colorado. He was the oldest of four children, all of whom helped with their parents' pizza business and played baseball. After graduating from Fort Collins High School, he joined the Navarro College baseball team as a shortstop. His coaches transitioned him into pitching, and he became the team's ace in 2014. Hammer spent two seasons with Navarro before continuing his college baseball career with the Marshall Thundering Herd. After graduating from Marshall, the Rockies selected Hammer in the 24th round of the 2016 MLB Draft.

While Hammer was playing in the Rockies' farm system, he was traded to the Phillies in exchange for Pat Neshek. He missed most of the 2018 season with an elbow injury but rose through the Phillies' minor leagues at the start of the 2019 season, making his MLB debut that May. Hammer was sent back down to Triple-A in July and remained there for the rest of the season. He did not play in 2020 due to the COVID-19 pandemic but returned to the Phillies bullpen in 2021. After being outrighted from Philadelphia's roster, Hammer re-signed with the team that drafted him before the 2022 season.