# Brett de Geus

Brett de Geus (/dʌˈɡʌs/ duh-GUS; born November 4, 1997) is an American professional baseball pitcher for the Miami Marlins of Major League Baseball (MLB). He has previously played in MLB for the Texas Rangers, Arizona Diamondbacks, Seattle Mariners, and Toronto Blue Jays.

## Amateur career

de Geus attended Foothill High School in Pleasanton, California. He was not selected in the 2015 Major League Baseball draft and thus enrolled at Cabrillo College in Aptos, California, where he played baseball. As a freshman at Cabrillo in 2016, de Geus earned all-conference honors. As a sophomore in 2017, he went 9–3 with a 1.94 ERA over 16 games, including 14 starts.

## Professional career
### Los Angeles Dodgers

After the season, de Geus was selected by the Los Angeles Dodgers in the 33rd round, with the 1,000th overall selection, of the 2017 Major League Baseball draft. de Geus signed with the Dodgers and made his professional debut in 2018 with the Ogden Raptors, going 4–5 with a 7.26 ERA over 15 games (14 starts). In 2019, he began the year with the Great Lakes Loons before being promoted to the Rancho Cucamonga Quakes in June. Over 39 relief appearances between the two clubs, he pitched to a 6–2 record with a 1.75 ERA, striking out 72 over 61+2⁄3 innings. Following the season, he was selected to play in the Arizona Fall League, where he was named an All-Star.
de Geus was a non-roster invite to 2020 spring training, but he did not play in a game in 2020 due to the cancellation of the minor league season because of the COVID-19 pandemic.

### Texas Rangers

On December 10, 2020, Texas Rangers selected de Geus with the second pick in the Rule 5 draft. He made the Rangers' Opening Day roster in 2021. On April 1, 2021, de Geus made his major league debut, surrendering three earned runs in one inning pitched. De Geus was designated for assignment on June 23, after posting a 8.44 ERA over 19 games for Texas.

### Arizona Diamondbacks

On June 25, 2021, de Geus was claimed off waivers by the Arizona Diamondbacks. Over 28 relief appearances with the Diamondbacks, he went 3–2 with a 6.56 ERA and 15 strikeouts. On November 26, de Geus was designated for assignment. He cleared waivers and was sent outright to the Triple-A Reno Aces on November 30.
De Geus was assigned to the Double-A Amarillo Sod Poodles to begin the 2022 season. He made 17 appearances for the team, struggling to a 5.96 ERA and 2–1 record with 16 strikeouts in 22+2⁄3 innings pitched. On June 7, 2022, de Geus was released by the Diamondbacks organization.

### York Revolution

On June 22, 2022, de Geus signed with the York Revolution of the Atlantic League of Professional Baseball (ALPB). In 33 games, he went 2–2 with a 6.43 ERA and 31 strikeouts in 35 innings. de Geus became a free agent following the season.

### Frederick Atlantic League Team

On April 21, 2023, de Geus signed with the unnamed Frederick team in the ALPB. In five relief appearances for Frederick, de Geus registered a 3.00 ERA with six strikeouts in six innings pitched.

### Kansas City Royals

On May 11, 2023, de Geus' contract was purchased by the Kansas City Royals and was assigned to the Triple-A Omaha Storm Chasers. In 29 appearances split between Omaha and the Double–A Northwest Arkansas Naturals, he accumulated a 4.86 ERA with 36 strikeouts across 46+1⁄3 innings pitched. de Geus elected free agency following the season on November 6.

### Seattle Mariners

On December 3, 2023, de Geus signed a minor league deal with the Seattle Mariners. He made three appearances for the Triple–A Tacoma Rainiers before he was selected to the major league roster on April 8, 2024. He pitched four times for the Mariners, allowing one run in 3+1⁄3 innings pitched before being optioned back to Tacoma on April 22. de Geus was designated for assignment by Seattle on August 2.

### Miami Marlins

On August 5, 2024, de Geus was claimed off waivers by the Miami Marlins and optioned to the Triple-A Jacksonville Jumbo Shrimp. In 7 games for Miami, he compiled a 6.35 ERA with 4 strikeouts over 5+2⁄3 innings pitched. De Geus was designated for assignment by the Marlins on September 10.

### Toronto Blue Jays

On September 12, 2024, de Geus was claimed off waivers by the Toronto Blue Jays. In 2 appearances for the Blue Jays, he struggled to a 15.43 ERA with 1 strikeout in 2+1⁄3 innings pitched. On January 10, 2025, de Geus was designated for assignment following the signing of Jeff Hoffman.

### Miami Marlins (second stint)

On January 15, 2025, de Geus was traded to the Pittsburgh Pirates in exchange for cash considerations. He was designated for assignment by Pittsburgh on February 22. On February 27, de Geus was claimed off waivers by the Miami Marlins. He was optioned to the Triple-A Jacksonville Jumbo Shrimp to begin the season.