Having a breakout season is incredibly difficult for most players to pull off. Doing so in the playoffs, where playing time is severely limited and the pressure is on, is almost unthinkable.
Yet we've seen a handful of players do just that over the years, going from only somewhat-known prospects or mediocre veterans to playoff sensations and household names overnight.
While the full-time baseball fan will be familiar with most of the names on this list, the casual fan will not—and it's those fans who are most impacted by breakout campaigns, with formerly unknown players becoming as familiar to them as the superstars.
Let's take a look at the one player from each team who could complete that transformation in the 2013 playoffs.
*Unless otherwise noted, all statistics are courtesy of Baseball-Reference and are current through games of September 25.