MLB on Apple tv
How do I see my mlb subscription on new Apple 4K
Apple TV 4K, tvOS 14
Have you gone to the TV App Store and downloaded the MLB app to your TV home screen?
M1 Mac mini, macOS 11.2.2; Watch, series 5 GPS/cellular, watchOS 7.3.1; iPad Pro 2nd Gen, iPadOS 14.4; iPad Air 2, iPadOS 14.4; iPhone 12 Pro, iOS 14.4; TV 4th Gen, tvOS 14.; HomePods, audioOS 14.4 and Airport Express w/ Airplay 2