All Out!! is a shonen sports series about rugby. It's becoming one of my favorites. It's a bit different in that the author is showing more off field interactions. And also the coach gets a great deal of focus which I found to be unusual especially since he's an old man. The art style and mannerisms are a bit weird to me. But I thought it was pretty charming.
Batoto has chapters 1-15: http://bato.to/comic/_/comics/all-out-r11766
Mangastream has chapters 14-52: http://mangastream.com/manga/allout
The anime is currently ongoing on Cruncyroll and expands more of the characters with filler that actually seems to fit. I don't see it ever being Haikyuu!! level but I'd say it's worth a shot.:happy: