The Tacoma Rainiers are a Minor League Baseball team of the Pacific Coast League (PCL) and the Triple-A affiliate of the Seattle Mariners. They are located in Tacoma, Washington, and play their home games at Cheney Stadium, which opened in 1960. Tacoma has competed in the PCL since 1960, including the 2021 season when it was known as the Triple-A West. The team operated under several monikers before becoming the Rainiers in 1995.