Unable to find this set in the catalog - 2021 Topps X Sports Illustrated Anonymous 2 years ago updated 1 year ago Answered Please Add
Just to clarify, is this the set that you're looking for?
https://www.cardboardconnection.com/2021-topps-x-sports-illustrated-cards
I've found that giving a link to the checklist from cardboard connection will help the staff add the set faster, as it has usually has a downloadable checklist. If it doesn't, you may have to add the specific cards to your collection