Coby Mayo Bio
Coby Gerald Mayo (born December 10, 2001) is an American professional baseball first baseman for the Baltimore Orioles of Major League Baseball (MLB). A product of the Orioles’ farm system, Mayo signed with the organization after being selected in the 2020 MLB Draft and worked his way through the minor leagues before reaching the majors in 2024. His combination of power, plate discipline, and defensive upside has made him one of the more talked-about young corner-infield prospects in the sport.
Mayo rose quickly through Baltimore’s developmental ranks, earning recognition as one of the top prospects in baseball by the mid-2020s. He has been praised for his hard contact at the plate and his steady presence at first base, and his early major league appearances offered a first glimpse of his long-term potential with the Orioles.
Early Life and Background
Coby Gerald Mayo was born on December 10, 2001, and grew up in Parkland, Florida, where he attended Marjory Stoneman Douglas High School. The high school became widely known following the tragic Parkland shooting, an event Mayo experienced as a student. Despite the heavy atmosphere surrounding that period, he continued to develop as a baseball player and steadily built a reputation as one of the most promising young hitters in the region.
Mayo starred as a multi-year starter for the Marjory Stoneman Douglas Eagles. As a sophomore in 2018, he batted .388 with seven home runs, and he followed that up by hitting .391 with four home runs as a junior in 2019. During the summer of 2019, his performance earned him a spot in the Under Armour All-America Baseball Game at Wrigley Field, one of the premier showcase events for elite amateur players. As a senior in 2020, he was batting .455 before the season was cancelled because of the COVID-19 pandemic.
Path to Baseball
Coming out of high school, Mayo was widely regarded as one of the top hitters in the 2020 draft class. He had originally committed to play college baseball at the University of Florida, but his strong professional stock convinced him to go in a different direction. The Baltimore Orioles selected him in the fourth round of the 2020 Major League Baseball Draft with the 103rd overall pick.
Mayo signed with the Orioles for $1.75 million, forgoing his commitment to the University of Florida to begin his professional career. The minor league season was cancelled that year because of the COVID-19 pandemic, so he did not play in an official professional game following his signing. He missed additional time at the start of 2021 due to a knee injury, but once he was healthy, he made his professional debut in July 2021 and quickly demonstrated the bat-to-ball skills that had made him a draft target.
Coby Mayo Career
Early Career (2021-2022)
Mayo made his professional debut in July 2021 with the Rookie-level Florida Complex League Orioles and was promoted to the Delmarva Shorebirds of the Low-A East in August. Over 53 games between the two clubs, he slashed .319/.426/.555 with nine home runs, 41 RBI, 14 doubles, and 11 stolen bases. After the season, he spent time at Ed Smith Stadium participating in Baltimore’s fall instructional league.
In 2022, Mayo was assigned to the Aberdeen IronBirds of the High-A South Atlantic League to open the year. He was promoted to the Bowie Baysox of the Double-A Eastern League in late June, and although he was briefly sidelined in early July with back spasms, he rehabbed with the Florida Complex League Orioles and was activated in early August. Over 104 games across three affiliates, he slashed .247/.326/.456 with 19 home runs, 69 RBI, and twenty doubles.
Minor League Breakthrough (2023)
Mayo returned to Bowie to open the 2023 season and continued to produce at a high level, earning a promotion in early July to the Norfolk Tides of the Triple-A International League. Over 140 games between Bowie and Norfolk, he slashed .290/.410/.563 with 29 home runs, 99 RBI, and 45 doubles. That production pushed him firmly onto national prospect lists.
His strong 2023 campaign at Double-A was recognized when he won the 2023 Eastern League Most Valuable Player Award. The honor confirmed his status as one of the most advanced young hitters in Baltimore’s system and set the stage for his first major league camp invitation.
Major League Debut and Orioles Era (2024)
Mayo attended Orioles spring training in 2024 as a non-roster invitee and batted .326 with one home run and 11 RBI during the spring, then opened the year at Triple-A Norfolk. In 77 games for the Tides, he batted .301/.375/.586 with 20 home runs and 61 RBI, and he won the 2024 International League Top MLB Prospect Award. On August 2, 2024, he was promoted to the major leagues for the first time.
His first MLB hit came on August 14, 2024, a fifth-inning leadoff single to left field off DJ Herz that ended an 0-for-16 slump in a 4-1 home win over the Washington Nationals. He was optioned to Norfolk the following day, recalled on September 1 after Ramón Urías was placed on the injured list, and went on to make 17 appearances for the Orioles during his rookie campaign, batting .098 (4-for-41).
Driving Style and Strengths
As a hitter, Mayo has consistently been praised for his plus raw power, patient approach at the plate, and willingness to work counts. Defensively, he has transitioned into a steady presence at first base, where his footwork and hands have continued to develop. Scouts have regularly pointed to his bat as his carrying tool, with the defensive side viewed as an area of ongoing growth.
Notable Events and Milestones
Among Mayo’s most memorable early moments, his first MLB hit against the Washington Nationals stands out, as does his first career home run, which he hit on June 27, 2025, off José Caballero of the Tampa Bay Rays. His Eastern League MVP and International League Top MLB Prospect Awards mark the clearest statistical milestones of his rise through the minors.
Coby Mayo Career Wins
Because Mayo’s professional résumé is still in its early stages, his most decorated achievements have come in the form of individual awards and statistical honors rather than championships. His two most significant awards, the 2023 Eastern League Most Valuable Player Award and the 2024 International League Top MLB Prospect Award, bookend his ascent through the Baltimore Orioles’ farm system.
Minor League Highlights
Mayo’s strongest minor league season came in 2023, when he slashed .290/.410/.563 with 29 home runs, 99 RBI, and 45 doubles across 140 games at Bowie and Norfolk. His most recent standout stretch came in 2024 at Norfolk, where he batted .301/.375/.586 with 20 home runs and 61 RBI in 77 games.
Other Performances
In addition to his regular-season work, Mayo gained national exposure as a participant in the 2019 Under Armour All-America Baseball Game at Wrigley Field. He has continued to post strong on-base numbers throughout his professional career, reflecting the patient offensive approach that has defined his development.
Coby Mayo Family
Family Background and Racing Lineage
Public details about Coby Gerald Mayo’s parents and immediate family have not been widely documented, and no information about a baseball family lineage was available at the time of writing.
Personal Life
Mayo was a student at Marjory Stoneman Douglas High School in Parkland, Florida during the Parkland high school shooting, an experience he has carried into his adult life. He is known to keep his personal life largely private, and no details about a spouse, partner, or children have been publicly confirmed.
2025 Season Performance
Mayo was optioned to Triple-A Norfolk to begin the 2025 season, working to refine his offensive game and earn another opportunity in Baltimore. While at Norfolk, he continued to show the power and patience that had marked his previous minor league seasons. His perseverance paid off on June 27, 2025, when he hit his first career major league home run off José Caballero of the Tampa Bay Rays.
That first home run represented a significant milestone for a young player still establishing himself in the majors and gave him a tangible breakthrough to build on. The Orioles have remained committed to developing Mayo as part of their long-term core, and his early 2025 results suggest he is trending toward a larger major league role.
Looking ahead, Mayo’s priority is to translate his minor league power into consistent major league production, lock down the strike zone against big-league pitching, and carve out regular playing time at first base. With Baltimore continuing to compete in the American League East, his development remains an important storyline for the franchise in the seasons to come.