I like sport-mangas, but I don´t read really all types of sports.
These mangas I have read it:
Prince of Tennis - Best Tennis-Mangas of all time.
Eyeshield - Best Football-Manga of all time, but with unsatisfied Ending >.>
Glaucos - Pretty cool manga about swimming and nice artwork.
Kuroko no Basket - Although I don´t like basketball, this manga is good for alternation^^
Air Gear - Well, best Sport-Manga atm for me. Great Story, great Charakters and great action^^
Smash - Nice Slice of Life Sport Mangas with romance situation. I like it.
Cross Game - This manga I have dropped it, because it was anyhow for me borring in story and artwork.
But there are 2 others Manga, which I´m interested to read it, if there were more scans or scans generally.
King Golf, with no scans, and
Capeta, with only 2 Chapters of the beginning and 2 Chapters of Volume 11 *lol*.
Anyway I would read more sport-mangas with other sporttypes like handball oder ice hockey alá eyshield21.