Ooi! Tonbo

Both are about a young golf prodigy getting trained by a veteran in golf. Both come from a remote area and play to improve their game. Both are extremely talented and can adapt their game in unique situations. 

The protagonists of these two shows have very little in common. Ashita no Joe is quite dark with a rough atmosphere, while Ooi! Tonbo is pretty light-hearted with a relaxing atmosphere. However, both of these shows are sports anime, but not really about sports. They are both much more focused on character development than they are on boxing or golfing. 

Both follow a protagonist who start playing a sport by their own rather than having learnt to play in a professional, conventional way. They also have a heartwarming story. If you would like another feel-good sports story please check the other series. 

A similar premise of MC moving to a remote island due to professional crisis, where he meets a young girl, who shows him a new inspiring perspective to life, and they form a friendly bond.