The Tampa Bay Rays are a professional baseball team based in St. Petersburg, Florida, competing in the American League East division of Major League Baseball (MLB). Founded in 1998 as an expansion franchise, the Rays have built a reputation for innovative front-office strategies, strong player development, and a scrappy, team-first identity despite a modest payroll. The club plays its home games at Tropicana Field, the only full-time domed stadium in MLB. Known for their analytical approach and ability to develop elite pitching, the Rays have made multiple postseason appearances and reached the World Series in 2008 and 2020. Their rivalry with the Boston Red Sox and New York Yankees is a defining feature of the AL East.