The YouTube clip clearly shows the logo "abc", so it was obviously taken from TV. Even if we assume that the actual baseball games are not manipulated (- another subject -), the shows around them are pure showbiz and TV events. In this case, the TV "live" character is emphasized, since the boy's performance was meant to be "moving" rather than "stunning" in the sense of professional showbiz.

It is not my intention to spoil anyone's pleasure in baseball and in nice shows - just don't take everything for face value.