1. On October 9, 1875, the Maryland Agricultural College (now known as the University of Maryland) played their first football game against the Baltimore Athletic Club, losing 6-0. This marked the beginning of a long and successful collegiate football program for the university.

2. In 1962, the Baltimore Orioles won their first World Series championship on October 9, defeating the Los Angeles Dodgers in four games. The Orioles' pitcher Milt Pappas delivered a clutch performance in Game 3, striking out 10 batters and giving up only two runs.

3. October 9, 1774 saw the convention of Maryland patriots meeting in Annapolis, the provincial capital, to take a stand against British policies. The convention drafted a series of resolutions, which called for a boycott of British goods and expressed support for the Continental Congress.

4. On October 9, 1909, the first women's college basketball game in Maryland history was played between Hood College and St. John's College. Hood won the game 6-5, prompting the establishment of an intercollegiate women's basketball league in the state.

5. In 1986, U.S. Navy diver Robert Stethem was killed by terrorists on October 9, while he was aboard TWA Flight 847. The plane was hijacked by members of the Lebanese Hezbollah organization and flown to Beirut. Stethem, a native of Waldorf, Maryland, has since been honored with various memorials and monuments throughout the state.