Below is a partial list of minor league baseball players in the Colorado Rockies system and rosters of their minor league affiliates:

Players Cristian Arguelles

Cristian Arguelles (born June 30, 2007) is a Venezuelan professional baseball outfielder in the Colorado Rockies organization.

Arguelles signed with the Colorado Rockies as an international free agent in January 2024 for $700,000. He made his professional debut that year with the Rookie-level Dominican Summer League Rockies and batted .267 with 25 runs batted in (RBI) and 12 strikeouts across 172 at-bats.

Arguelles returned to play for the DSL Rockies in 2025 and hit .422 with five home runs and 55 RBI across 52 games. He was named the DSL Most Valuable Player. Arguelles was assigned to the Rookie-level Arizona Complex League Rockies to begin the 2026 season with whom he hit .402 with nine home runs and 70 RBI across 57 games. In July, he was promoted to the Single-A Fresno Grizzlies and batted .246 with two home runs and 22 RBI over 35 games.

Roldy Brito

Roldy Brito (born April 8, 2007) is a Dominican professional baseball second baseman and outfielder in the Colorado Rockies organization.

Brito signed with the Colorado Rockies as an international free agent in January 2024. He made his professional debut that year with the Dominican Summer League Rockies.

Brito played 2025 with the Arizona Complex League Rockies and Fresno Grizzlies. He was the Arizona Complex League MVP and was named the Doug Million Minor League Player of the Year, which is given by the Rockies to their best minor league player. In 2026, the Rockies invited Brito to spring training.

Robert Calaz

Robert Humberto Calaz (born November 22, 2005) is a Dominican professional baseball outfielder in the Colorado Rockies organization.

Calaz signed with the Colorado Rockies as an international free agent in January 2023. He made his professional debut that year with the Dominican Summer League Rockies.

Calaz played 2024 with the Arizona Complex League Rockies and Fresno Grizzlies. He was named the Complex League MVP after hitting .349/.462/.651 with 10 home runs and 56 runs batted in (RBI).

Jackson Cox

Jackson Gregory Cox (born September 25, 2003) is an American professional baseball pitcher in the Colorado Rockies organization.

Cox attended Toutle Lake High School in Toutle, Washington. He was selected by the Colorado Rockies in the second round with the 50th overall pick of the 2022 Major League Baseball draft. He signed with the team for $1.85 million, forgoing his commitment to play college baseball at the University of Oregon.

Cox made his professional debut in 2023 with the Single-A Fresno Grizzlies and had a 1-0 record, a 7.26 ERA, 32 strikeouts, and 20 walks across 31 innings. He underwent Tommy John surgery in July, ending his season early and forcing him to also miss the entirety of the 2024 season. Cox returned to play with Fresno for the 2025 season and started 23 games in which he went 4-6 with a 3.39 ERA and 92 strikeouts over 85 innings. He was assigned to the High-A Spokane Indians to open the 2026 season. Cox made 10 starts with Spokane and pitched to a 4-1 record, a 4.23 ERA, and 78 strikeouts across innings and was promoted to the Double-A Hartford Yard Goats in June. Across nine starts with Hartford, he went 2-4 with a 4.29 ERA and 50 strikeouts over 42 innings.

Konner Eaton

Konner R. Eaton (born November 30, 2002) is an American professional baseball pitcher in the Colorado Rockies organization.

Eaton attended Prince George High School in Prince George, Virginia, and played college baseball at George Mason University for the Patriots. In 2023, he played in the Cape Cod Baseball League with the Orleans Firebirds. He was selected by the Colorado Rockies in the sixth round of the 2024 Major League Baseball draft.

Eaton made his professional debut after signing with the Fresno Grizzlies and also played with the Spokane Indians, giving up one run over 11 innings between both teams. He was assigned to Spokane to open the 2025 season and promoted to the Hartford Yard Goats in August. Over 27 starts between the two clubs, Eaton went 6-9 with a 3.79 ERA and 149 strikeouts across 140 innings. He returned to Hartford for the 2026 season. Eaton made 23 starts for Hartford and went 5-3 with a 4.46 ERA and 103 strikeouts across 107 innings pitched. After the season, he was assigned to play in the Arizona Fall League with the Salt River Rafters.

George Mason Patriots bio

Griffin Herring

Griffin Garner Herring (born May 7, 2003) is an American professional baseball pitcher in the Colorado Rockies organization.

Herring attended Carroll Senior High School in Southlake, Texas. As a senior in 2022, he was The Dallas Morning News Baseball Player of the Year after going 13–1 with a 0.24 earned run average (ERA) and 145 strikeouts over 87 innings. Herring played college baseball at Louisiana State University (LSU), where he was a relief pitcher. In 2024, he played collegiate summer baseball with the Chatham Anglers of the Cape Cod Baseball League.

Herring was selected by the New York Yankees in the sixth round of the 2024 Major League Baseball draft. The Yankees converted him into a starting pitcher, and he made his professional debut in 2025 with the Tampa Tarpons.

On July 25, 2025, the Yankees traded Herring to the Colorado Rockies, along with Josh Grosz, in exchange for Ryan McMahon.

Antoine Jean

Antoine Jean (born August 1, 2001) is a Canadian professional baseball pitcher for the Colorado Rockies of Major League Baseball (MLB). He was named to the Canada national baseball team for the 2026 World Baseball Classic.

Jean grew up in Montreal, Quebec, and played for the Academie de Baseball Canada. In the 2019 MLB Draft, Jean was drafted in the 19th round by the Minnesota Twins. However, he instead chose to play college baseball for the University of Alabama. In 2022 and 2023, he played collegiate summer baseball with the Falmouth Commodores of the Cape Cod Baseball League.

Jean transferred to the University of Houston for the 2024 season. Jean struggled in his first season, pitching to a 5.97 ERA. However, after converting to a reliever, he experienced a bounceback in 2025. Jean was named the Big 12 Pitcher of the Year, becoming the first reliever to win the award. In 21 games, Jean pitched 67 innings with a 2.55 ERA and 110 strikeouts. After the season, Jean was also named Canadian player of the year by the Canadian Baseball Network.

Jean was drafted by the Colorado Rockies in the 7th round of the 2025 MLB draft.

Dyan Jorge

Dyan Yamel Jorge (born March 18, 2003) is a Cuban professional baseball shortstop for the Colorado Rockies of Major League Baseball (MLB).

Jorge signed with the Colorado Rockies as an international free agent in January 2022. He made his professional debut in 2022 with the Dominican Summer League Rockies.

Jorge played 2023 with the Arizona Complex League Rockies and Fresno Grizzlies and started 2024 with the Spokane Indians.

Jake Madden

Jake Thomas Madden (born December 26, 2001) is an American baseball pitcher in the Colorado Rockies organization.

Madden grew up in Harrisburg, Pennsylvania and attended East Pennsboro High School. He committed to play college baseball at South Carolina from 15 scholarship offers during his junior year. Madden tore his ulnar collateral ligament in his senior season and continued to play as East Pennsboro's designated hitter. He decommitted from South Carolina in the summer after his senior year and instead enrolled at Northwest Florida State College.

Madden redshirted his first season at Northwest Florida while recovering from Tommy John surgery to repair his elbow injury. He committed to transfer to Alabama for his remaining collegiate eligibility prior to his sophomore season. As a redshirt freshman, Madden went 4-4 with a 4.53 ERA and 76 strikeouts in innings pitched. He dealt with blister issues on his pitching hand throughout the season.

Madden was selected in the fourth round by the Los Angeles Angels in the 2022 Major League Baseball draft. He signed with the Angels on July 22, 2022, for an over-slot signing bonus of $997,500.

On July 30, 2023, Madden and was traded along with Mason Albright to the Colorado Rockies in exchange for C. J. Cron and Randal Grichuk.

Northwest Florida State Raiders bio

Jack Mahoney

Jack Murphy Mahoney (born August 13, 2001) is an American professional baseball pitcher in the Colorado Rockies organization.

Mahoney attended St. Viator High School in Arlington Heights, Illinois, where he played baseball as a shortstop and pitcher, football as a quarterback, and basketball. After graduating, he played college baseball at the University of South Carolina. In 2021, his freshman year, he posted a 1.62 ERA over 14 games before undergoing Tommy John surgery, forcing him to miss the remainder of the 2021 season and all of the 2022 season. Mahoney returned to play as a junior in 2023 and started 17 games, going 7-4 with a 4.16 ERA and 84 strikeouts. After the season, he was selected by the Colorado Rockies in the third round of the 2023 Major League Baseball draft.

After signing with the Rockies, Mahoney made his professional debut with the Rookie-level Arizona Complex League Rockies, pitching a total of two innings for the season. He was assigned to the Single-A Fresno Grizzlies to open the 2024 season. In late July, he was promoted to the High-A Spokane Indians, with whom he finished the year. Over 23 games (22 starts) between both teams, Mahoney went 6-7 with a 3.90 ERA and 115 strikeouts over 120 innings. For the 2025 season, he was assigned to the Double-A Hartford Yard Goats. Over 24 starts, Mahoney went 3-10 with a 5.93 ERA, 81 strikeouts, and 46 walks over innings. After the season, he was assigned to play in the Arizona Fall League with the Salt River Rafters. Mahoney opened the 2026 season with Hartford and made 13 starts in which he had a 7-1 record, a 1.99 ERA, and 64 strikeouts over 68 innings. He was promoted to the Triple-A Albuquerque Isotopes in August and pitched to a 0-2 record with a 6.21 ERA across eight starts.

South Carolina Gamecocks bio

Aiden May

Aiden Tyler May (born April 22, 2003) is an American professional baseball pitcher in the Colorado Rockies organization.

May attended Sandia High School in Albuquerque, New Mexico. He played one year of college baseball at Pima Community College in 2022, and then transferred to the University of Arizona for the 2023 season. With Arizona in 2023, May made 16 starts and had a 5-3 record, a 6.33 ERA, and 77 strikeouts across innings. After the 2023 season, he transferred to Oregon State University. In May's lone year at Oregon State in 2024, he started 14 games and had a 7-1 record, a 3.05 ERA, and 84 strikeouts across innings.

May was selected by the Miami Marlins with the 70th overall pick in the 2024 Major League Baseball draft. He made his professional debut in July of 2025 with the Rookie-level Florida Complex League Marlins and was promoted to the Single-A Jupiter Hammerheads during the season. Across ten games (nine starts), he had a 1-1 record, a 2.63 ERA, and 30 strikeouts across innings. After the season, he played in the Arizona Fall League with the Mesa Solar Sox. May was assigned to the High-A Beloit Sky Carp to begin the 2026 season. On April 19, he pitched six innings of a combined no-hitter alongside Justin Storm against the South Bend Cubs.

On August 3, 2026, May and Connor Norby were traded to the Colorado Rockies in exchange for Victor Vodnik. The Rockies assigned him to the High-A Spokane Indians. Across 19 starts for the 2026 season between Beloit and Spokane, May had a 5-5 record, a 3.96 ERA, and 71 strikeouts over 91 innings.

Oregon State Beavers bio

Cole Messina

Michael Cole Messina (born May 14, 2003) is an American professional baseball catcher in the Colorado Rockies organization.