With Jim Thome slugging his record-setting 13th career walk-off home run on this date in 2012, this edition of the "MLB Quiz of the Day" celebrates the Hall of Famer's incredible feat by focusing on all things walk-off homers.

Do you know which active player has the most walk-off homers? Or the only player to hit two walk-off home runs in the same postseason? What about the only pitcher in big league history to serve up multiple walk-off shots in the postseason?

Let's find out below: