Tennis has a weird scoring system, and the '40' in place of what should logically be '45' leaves lots of people scratching their heads. If you've ever sat courtside or watched a match on TV and wondered why tennis points jump from 30 straight to 40, you're not alone. This article digs into the history, explains why '40' stuck, and shares some cool facts and tips that even longtime fans might not know. Get ready to see tennis scoring in a whole new way.