A baseball game between the Baltimore Orioles and the Chicago White Sox sets the all-time low attendance mark for Major League Baseball. Zero fans were in attendance for the game, as the stadium was officially closed to the public due to the 2015 Baltimore protests.

On April 12, 2015, Baltimore Police Department officers arrested Freddie Gray, a 25-year-old African American resident of Baltimore, Maryland. Gray's neck and spine were injured while he was in a police vehicle and he went into a coma. On April 18, there were protests in front of the Western district police station. Gray died on April 19.

Further protests were organized after Gray's death became public knowledge, amid the police department's continuing inability to adequately or consistently explain the events following the arrest and the injuries. Spontaneous protests started after the funeral service, although several included violent elements. Civil unrest continued with at least twenty police officers injured, at least 250 people arrested, 285 to 350 businesses damaged, 150 vehicle fires, 60 structure fires, 27 drugstores looted, thousands of police and Maryland National Guard troops deployed, and with a state of emergency declared in the city limits of Baltimore. The state of emergency was lifted on May 6. The series of protests took place against a historical backdrop of racial and poverty issues in Baltimore.On May 1, 2015, Gray's death was ruled by the medical examiner to be a homicide. Six officers were charged with various offenses, including second-degree murder, in connection with Gray's death. Three officers were subsequently acquitted; in July 2016, following the acquittals, Baltimore City State's Attorney Marilyn Mosby dropped charges against the remaining three officers.

The Baltimore Orioles are an American professional baseball team based in Baltimore. The Orioles compete in Major League Baseball (MLB) as a member club of the American League (AL) East division. As one of the American League's eight charter teams in 1901, the franchise spent its first year as a major league club in Milwaukee, Wisconsin, as the Milwaukee Brewers before moving to St. Louis, Missouri, to become the St. Louis Browns in 1902. After 52 years in St. Louis, the franchise was purchased in November 1953 by a syndicate of Baltimore business and civic interests led by attorney and civic activist Clarence Miles and Mayor Thomas D'Alesandro Jr. The team's current owner is American trial lawyer Peter Angelos.

The Orioles adopted their team name in honor of the official state bird of Maryland; it had been used previously by several baseball clubs in the city, including another AL charter member franchise also named the "Baltimore Orioles", which moved north to New York in 1903 to eventually become the Yankees. Nicknames for the team include the "O's" and the "Birds".

The Orioles experienced their greatest success from 1966 to 1983, when they made six World Series appearances, winning three of them (1966, 1970, 1983). This era of the club featured several future Hall of Famers who would later be inducted representing the Orioles, such as third baseman Brooks Robinson, outfielder Frank Robinson, starting pitcher Jim Palmer, first baseman Eddie Murray, shortstop Cal Ripken Jr., and manager Earl Weaver. The Orioles have won a total of nine division championships (1969, 1970, 1971, 1973, 1974, 1979, 1983, 1997, 2014), six pennants (1966, 1969, 1970, 1971, 1979, 1983), and three wild card berths (1996, 2012, 2016).

After suffering a stretch of 14 consecutive losing seasons from 1998 to 2011, the team qualified for the postseason three times under manager Buck Showalter and general manager Dan Duquette, including a division title and advancement to the American League Championship Series for the first time in 17 years in 2014. However, the 2018 team finished with a 47–115 record, prompting the team to move on from Showalter and Duquette following the season's conclusion. The Orioles' current manager is Brandon Hyde, while Mike Elias serves as general manager and executive vice president.

The Orioles are well known for their influential ballpark, Oriole Park at Camden Yards, which opened in 1992 in downtown Baltimore.From 1901 through the end of 2021, the franchise's overall win–loss record is 8,845–9,873 (.473). Since moving to Baltimore in 1954, the Orioles have an overall win–loss record of 5,383–5,319 (.503) through the end of 2021.