So I flipped the pack over and this is what I saw.
Not sure which I should consider as my first 2015 Topps card, but either way it's a member of an NL West rival of the Diamondbacks.
The pack contained two inserts.
This 1st Home Run card looks better in person.
Next up is a First Pitch card featuring Macklemore. He is a huge Mariners fan and his song My oh My is a must for any baseball fan. As a huge Griffey fan myself I remember watching that game.