Zimmerman debuted for the Nationals in September 2005 as a baby-faced 20-year-old. Seven years later, he will finally make his playoff debut when Washington plays its postseason opener Sunday. (The Washington Times)

Zimmerman debuted for the Nationals in September 2005 as a baby-faced 20-year-old. Seven years later, he will finally make his playoff debut when Washington plays its postseason opener Sunday. (The Washington Times)