I'm shocked that Football is ranked at number one. I'm not a fan of the sport in the slightest. I enjoyed the 2D Madden games, and the 2K series of 3D football games...But otherwise, I'd rather play another sport. That said, exaggerated sports games like Blitz, Xtreme, and Mutant League are always something I enjoy, regardless of the sport.
Baseball - 45 Games
I honestly thought that this would be my number one sport for games owned. Realistic, exaggerated, it doesn't matter. I always enjoy baseball games. One of my personal favorites is an import on the Saturn, complete with the Japanese league teams and players.
Just out of curiosity, I'd like to see what sport I have the most games for and what sport I have the least for. Maybe I'll add pictures or something down the road, but for now, it's just a bare-bones list with the shelving look. I am making comments for the particular sports, but that's a work in progress and they'll get done when they get done.
Oh, and while I do consider it to be a sport, though not in the traditional sense, I'm not including pro wrestling on here. I have no doubt that it would easily take the number one spot, as I like to collect those types of games specifically.