You’re at a major league baseball game, hunkered down in the cheap seats out in left field. It’s late in the game, and the batter is making his third trip to the plate. He’s hit deep to left in his first two at bats, each time driving the fielder almost to the warning track. Here’s another windup, another pitch, another swing, and another crack! As it did in previous innings, the ball heads your way, but this time it does not appear to...