Out of the Park Baseball 19 - The quest for the Perfect Team

I wonder what the odds are of pulling the same card in consecutive pulls from a pack.

Unfortunately it was a 61 bronze pitcher, and not a diamond or perfect. I’d really like an explanation of the card pulling system. I originally thought because the odds quoted were from them running massive simulations, that it basically did a random pull from the whole set of cards, but with the amount of duplicates you see especially for the lower tier cards, I wonder if it first decides on the tier of card you are pulling, and then pulls a card from that set.