Season 1 was an 8 for me, which means I really enjoyed it. Never knew anything about golf or cared about it at all so that was pretty unexpected.
I was looking forward to season 2 but the first couple of episodes were pretty slow so I was about to give up thinking that in most cases the first season of a show is usually the best anyway, so nothing lost really. But I decided to stick with it and boy did it deliver on the second half. Seriously, I don't know how they managed to keep our interest up for a golf game, and how they made it into such an emotional and brutal fight. It was great to watch.
Which is why now I'm looking forward to season 3, and from what I read in blogs it'll most likely be enough for the remaining chapters of the manga. So hopefully we'll get to see it to the end. But even if we don't, the first two seasons were worth it.