My pal Jon Hock, director of great sports documentaries like the 30 for 30 "The Best There Never Was" on Marcus Dupree and "Of Miracles and Men," on the 1980 Soviet hockey team, took the above photo of gorgeous PNC Park in Pittsburgh. And it reminded me that I have not ranked the stadiums in a while. I've been to 29 of the 30 -- planning to see Atlanta soon. I don't want to rank them 1-29 because the difference between some of them is so slight that it's not worth mentioning. Instead, let's put them in different categories.