The Kansas City Royals are a Major League Baseball team based in Kansas City, Missouri.

The Royals are a member of the Central Division of Major League Baseball's American League.

The franchise was established following the actions of Stuart Symington, then-United States Senator from Missouri, who demanded a new franchise for the city after the Athletics---Kansas City's previous major league team---moved to Oakland, California.

In 1973, under Jack McKeon, the Royals adopted their iconic "powder blue" road uniforms and moved from Municipal Stadium to the brand-new Royals Stadium (now known as Kauffman Stadium).

Manager Whitey Herzog replaced McKeon in 1975, and the Royals quickly became the dominant franchise in the American League Western Division, winning three straight division championships from 1976 to 1978.

However, the Royals lost to the New York Yankees in three straight American League Championship Series encounters.

The rivalry stems largely from the period between 1976 and 1980, when both teams were in top form and met four times in five years for the American League Championship Series.

Also of note are division rivalries with the Cleveland Indians, Chicago White Sox, Detroit Tigers, and Minnesota Twins.

The Royals' most prominent rivalry is with the intrastate St. Louis Cardinals, stemming back to the Royals' victory over the Cardinals in the 1985 World Series.

The Kansas City Royals series with the St. Louis Cardinals is still a source of contention among fans, notably the controversial call in the bottom of the ninth of game 6 in which Jorge Orta was called safe on a play that replays later showed him out.

2010 Kansas City Royals Baseball