I realize that most business pertaining to Baseball-Birthdays died with the website, but the relief associated with solving a mystery outweighs everything.
This photo has been vexing researchers, including myself, for (in some cases) years as it was one of the long-standing unidentified images in a particular thread there. Well, it turns out this good-looking, strangely familiar guy is none other than Talmadge Nunnari, photographed for Fleer use in the 1999 Fleer Tradition "Glossy" set.
Many of the prospects from this and similar Fleer products are in a handful of Lexibell files with the "neg" prefix. FYI: Nunnari is legit for here, playing in 18 games for the 2000 Expos, going 1-for-5.