Choose the game you think your home run hero will hit a home run during the 2019 MLB regular season. If he does, you WIN A SPECIAL HOME RUN CHALLENGE CARD and are entered into the GRAND PRIZE DRAWING for a trip to the 2020 Home Run Derby(TM). Look for Home Run Challenge cards in packs of 2019 Topps Baseball Series 1 and Series 2.
Official Rules

Enter Home Run Challenge Code

Enter the code on the back of your card.

Check the back of your Home Run Challenge card and enter the code above