The New York Yankees were a baseball team on Earth in the 20th and 21st centuries, one of the most successful in the history of the sport. Their victory in the 1999 season was considered exceptional, and cited by Benjamin Sisko as perhaps the greatest team ever. (DS9 episode: "Past Tense, Part II")
- This 1995 episode accurately predicted a winning 1999 season for the Yankees.
Ares IV astronaut John Kelly was a fan of the Yankees, and when his ship was thrown from Mars orbit in 2032, he lamented that he would never know how the Yankees fared in that year's World Series against the London Kings. (The Yankees won in six games.) (VOY episode: "One Small Step")
The Yankees again faced the London Kings in the last World Series game played on Earth, in 2042. That series was won by the Kings, on a home run hit by Buck Bokai. (ST novel: Articles of the Federation)
- In the novelization of DS9 episode "Far Beyond the Stars", Willie Hawkins is said in some instances to be a member of the New York Yankees, and in another, a member of the New York Giants. On screen, he played for the Giants, suggesting the Yankee reference was from an early version of the script. This would have been an historical error, as the story takes place in 1953, yet the Yankees did not have any African-American players until 1955.