Gillaspie attended Frontier High School in Bakersfield, California, from 2011 to 2015. He was selected to play for the Oakland Athletics in the 2014 Area Code Games.^[1] He attended Oxnard College from 2015 to 2017, where he played college baseball as a pitcher alongside catching and playing third base.^[2]

Independent leagues edit

Gillaspie was not drafted out of Oxnard College in 2017 and joined the Monterey Amberjacks in the Pecos League, and from there was moved up to the Salina Stockade in the American Association of Professional Baseball. After being released, he was signed by the Sonoma Stompers in the Pacific Association.^[3] In January 2018, Gillaspie played in the California Winter League and from there was signed by the United Shore Professional Baseball League to play for the Diamond Hoppers.^[4]

Milwaukee Brewers edit

On July 13, 2018, the Milwaukee Brewers signed Gillaspie to a minor-league contract.^[5] Gillaspie played with the Rookie-level Arizona League Brewers and the Rookie-level Helena Brewers of the Pioneer League with whom he posted a 3.26 earned run average (ERA) over 19+1⁄3 innings pitched.

Gillaspie spent the 2019 season with the Wisconsin Timber Rattlers of the Single-A Midwest League, posting a 3–7 win–loss record with a 3.96 ERA over 31 games (16 starts), striking out 92 batters over 109 innings.^[6] Gillaspie was named a Midwest League all-star with the Timber Rattlers.^[7] On September 11, 2019, Gillaspie was released by the Brewers organization. He did not play professionally in 2020 due to cancellation of the Minor League Baseball season due to the COVID-19 pandemic.^[8]

Baltimore Orioles edit

On June 9, 2021, Gillaspie signed a minor league contract with the Baltimore Orioles organization. He split the year between the Aberdeen IronBirds of the High-A East and the Bowie Baysox of the Double-A Northeast, going 1–3 with a 4.97 ERA over 26 relief appearances, striking out 52 batters over 41+2⁄3 innings.^[9] He was selected to play in the Arizona Fall League for the Mesa Solar Sox after the season.^[10]

On November 19, 2021, the Orioles selected Gillaspie's contract and added him to their 40-man roster to protect him from the Rule 5 draft.^[11] He returned to Bowie to open the 2022 season.^[12] After six appearances with Bowie in 2022, he was promoted to the Norfolk Tides of the Triple-A International League.^[13] On May 17, 2022, the Orioles promoted Gillaspie to the major leagues for the first time. He made his MLB debut that night versus the New York Yankees at Oriole Park at Camden Yards, throwing two scoreless innings in relief.^[14] On October 2, Gillaspie threw a scoreless 6th inning against the New York Yankees at Yankee Stadium to record his first major-league victory in a 3–1 Orioles win.^[15] Gillaspie finished the season with a 1–0 record with a 3.12 ERA in 17+1⁄3 innings pitched in 17 appearances.

In 2023, Gillaspie made 11 appearances for Baltimore, but struggled to a 6.00 ERA with eight strikeouts in nine innings of work. On September 2, 2023, he was designated for assignment following the Orioles' waiver claim of Jorge López.^[16]

San Diego Padres edit

On September 4, 2023, Gillaspie was claimed off waivers by the Boston Red Sox^[17] and optioned to Boston's Triple-A affiliate, the Worcester Red Sox.^[18] On November 15, 2023, Gillaspie was claimed off waivers by the San Diego Padres.^[19] He was optioned to the Triple–A El Paso Chihuahuas to begin the 2024 season.^[20] On April 17, Gillaspie's contract was selected by the Padres.^[21]

• Career statistics and player information from MLB, or ESPN, or Baseball Reference, or Fangraphs, or Baseball Reference (Minors), or Retrosheet