Go here to check out all of my past post on this set. Go here for a complete checklist of known variations.
I've also added a bonus variation card that features the recently retired David Ortiz. In honor of Ortiz's yearlong retirement roadshow last year Topps has issued ten different variations in this series -- one of which shows him exiting the dugout at Dodger Stadium. You can see that card at the very bottom.
Base Variation Cards
#5 Corey Seager