Frederick Keys
| Frederick Keys | |||||
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| Minor league affiliations | |||||
| Class | High-A (2026–present) | ||||
| Previous classes | Collegiate summer (2021–2025) Class A-Advanced (1989–2020) | ||||
| League | South Atlantic League (2026–present) | ||||
Previous leagues | MLB Draft League (2021–2025) Carolina League (1989–2020) | ||||
| Major league affiliations | |||||
| Team | Baltimore Orioles (2026–present) | ||||
| Previous teams | Unaffiliated (2021–2025) Baltimore Orioles (1989–2020) | ||||
| Minor league titles | |||||
| League titles (4) |
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| Division titles (5) |
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| Team data | |||||
| Name | Frederick Keys (1989–present) | ||||
| Colors | Black, orange, yellow, white | ||||
| Mascot | Keyote | ||||
| Ballpark | Nymeo Field at Harry Grove Stadium (1990–present) | ||||
Previous parks | McCurdy Field (1989) | ||||
Owner/ Operator | Attain Sports and Entertainment | ||||
| General manager | Slater Fuchs | ||||
| Manager | Preston Wilson | ||||
| Website | mlbdraftleague.com/frederick | ||||
The Frederick Keys are a Minor League Baseball (MiLB) team located in Frederick, Maryland. They are the High-A affiliate of the Baltimore Orioles. Home games are played at Nymeo Field at Harry Grove Stadium. Prior to Major League Baseball's reorganization of the minor leagues following the 2020 season, the Keys served as the Class A-Advanced affiliate of the Orioles from 1989 to 2020. After the reorganization, the Keys joined the MLB Draft League. On August 1, 2025, the team announced that it would once again serve as the Class A-Advanced (now called High-A) affiliate of the Baltimore Orioles starting in 2026, replacing the Aberdeen IronBirds, who replaced the Keys in the Draft League.
The team and one of its mascots, Frank Key, are named after lawyer and Frederick County native Francis Scott Key, the author of the poem "Defence of Fort M'Henry", the first stanza of which, set to the tune of "The Anacreontic Song", became "The Star-Spangled Banner", the American national anthem.