On the Waitkus card, I never owned it, it was one of the cards I saw on eBay about 4-5 months ago being sold by a single dealer that had almost the whole run of these auctioned 1 at a time. At least 80% of my checklist was from that one week and one dealer. I do remember some of the cards were tough to make out the "AN EXHIBIT CARD" because of the contrast and a light background, but Im usually good about not guessing and usually make sure Im seeing what Im thinking. I just looked at the Waitkus cards and dont believe there would be an issue with the background color on it.
With that said, I have made errors before
my checklist was just color coded checkmarks next to the corresponding listing in the SCD Catalog, I made sure to check the right pose variation, on the Waikus card it was the throwing w/plain uniform.