I think this may have been discussed a few times, but I still see people assigning Teams to cards in the Upper Deck Goodwin Champions sets under Multi-Sport. Please don't do this! These sets do not mention any specific teams and should not be assigned to the cards, even if a player has a painted uniform resembling a familiar one.
If you have the ability to update Teams and see anything in these spots, please clear them out and set them to "No Team".
If you have access to the Teams utility, you can clear out insert sets quickly by copying base Teams to insert Teams. Since the process clears out the destination before trying to copy (whether numbers match up or not), it'll wipe them out in one shot and save time.
Thanks!
* Ed * L8 * Cards in my personal Collection are unavailable *