In the world of sports, athletes often dedicate their entire lives to reaching the pinnacle of their profession, but for many, life at the top can be short-lived. Sometimes all a player gets to experience at the highest level is one minute on the court, one trip to the plate, one shot on goal or one checkered flag, but more often than not, that fleeting moment in the spotlight is a story all its own. This is One and Done, a FOX Sports series profiling athletes, their paths to success and the stories behind some of sports’ most ephemeral brushes with glory.Baseball was the least of Roy Gleason’s worries during the fall and winter of 1968, as the former Dodgers outfielder sat day after day in a room at Letterman Army Hospital in San Francisco, recovering from injuries suffered in Vietnam that July.At that time, Gleason wasn’t reflecting about his first major-league hit, a double in his only big-league at-bat, or whether it might also be his last. He wasn’t concerned, either, with the World Series ring that his eight games in the big leagues earned him in 1963 — a piece of memorabilia that was curiously absent when the…