The Pete O'Brien cards with blue shaded stats is a variation on his card only, as far as I have known. This variation has circulated on wantlists for a couple decades now. I have looked for it on and off but admittedly haven't thought about in 10+ years. Beckett often wouldnt apply a UER or ERR label to new variations but would note in parenthesis like this until more info turned up. I believe they stopped pursuing this one and left it cataloged like this.
Edit to add: I see that this card also has a different border design from the factory set version - very odd!
Mark345 wrote:
There is no blue creeping up the stats box on this card with the same front design.
Owner and creator of JunkWaxGems, online source for unlisted error, variation and oddball info from the junk wax era.