Kansas City Royals Game Used Baseball Jersey and Baseball Cap worn by pitcher Brad Keller on June 30, 2018 when the Royals played the Seattle Mariners for Turn Ahead The Clock Night. During this game each team wore futuristic uniforms. Please note that while this is a game used uniform, Brad Keller did not actually pitch in this game. Each item is individually numbered and is authenticated through MLB Authentication. Jersey Number JD160547 and Cap Number JD159221. If you have any questions please let me know.