The Rays have a pitching machine that shoots out tennis balls up to 120 mph. Some of the balls have a black mark on them, some have a red mark. Longo can crank the machine up to 100 mph, then can call out what color is coming to the plate.
When he sees a black ball, he pulls it.
When he sees a red ball, he hits it to the opposite field.
When teammate Carlos Pena was asked him how he did that, Longo smiled in amazement and said, "I have no idea."