Watch Kansas City Royals vs Seattle Mariners live stream in this highly anticipated MLB showdown on September 17th, 2025, at 00:40 UTC. Experience the thrill as Kansas City Royals defend their home turf against Seattle Mariners in this must-watch MLB event. Tune in for heart-stopping plays and intense competition in this exciting MLB game. Don't miss a second of the action - watch live and be part of the excitement! #MLB #Kansas City Royals #Seattle Mariners #MLBShowdown #GameDay #WatchLive