When I make the tiles, the cards are inserted in alphabetical order by brands. I decided to re-do the Ron Santo tile and this time the cards are in chronological order. I think it's a better way to go, in that you can see his career progression. You can also see how many cards came after his playing days.
For Santo, I've got 99 cards in the tile, nine cards per row. His playing days go four cards into the sixth row, a total of 49 cards. That means there are 50 from after he retired, which makes about almost an exact 50 / 50 split.