"From Mike Pesca, host of the popular Slate podcast The Gist, comes the greatest sports minds imagining how the world would change if a play, trade, injury, or referee's call had just gone the other way. No announcer ever proclaimed: "Up Rises Frazier!" "Havlicek commits the foul, trying to steal the ball!" or "The Giants Lose the Pennant, The Giants Lose The Pennant!" Such moments are indelibly etched upon the mind of every sports fan. Or rather,...