Who WAS that lucky man at the baseball game tonight?

...Wearing the navy blue satellite PopMart tour TShirt?

Whoever he was, he caught Mark McGwire's 55th home run ball in St Louis
tonight. National televison, and there's that lovely t-shirt!

I can't BELIEVE that nobody else has mentioned it yet! Anyone we know? I
was in a restaurant, so I saw the moment, but didn't hear the INTERVIEW with
the guy (only in America, I guess). Any reference to the shirt? Who
knows...

Thanks, buds...
Chantal