These are the tales of one-season wonders. The history of baseball is filled with forgotten names--players who are good enough to reach the top of the sport but who, for any number of reasons, land at the edges of the game. Some spend a week or two in the major leagues and then disappear back into the minors. Many leave the sport for good. Still, for an afternoon, a week, or a couple of months, these men stood on the field alongside the best players in The Show. Here are gripping stories of their brief moments in the sun. Praise for Joe Schuster's The Might Have Been: "Surely destined to join...