Watching on television, through the eye of the center field camera, the pitch looks unhittable.
Standing at home plate, with a bat in your hands, it looks just about the same.
"A devastating pitch," Tampa Bay Rays third baseman Evan Longoria said. "Really hard, and with tremendous sink. It looks straight until it gets to the plate, and then it goes down."
Zach Britton throws it, game after game, pitch after pitch. Hitters pound it into the ground, or they just whiff. According to FanGraphs, their batting average against it was .