The Australian Open is currently in progress. Being at a bit of a loose end earlier today I sat down to watch some. I'm curious, though - why is the player serving, given two tries to get it right? If they "fault" on their first serve they get a second serve. No other sport does this. Can you imagine Tiger Woods at the golf - "Oh, that's ok, let him tee off again, his first shot missed the green." I don't think so. Or Ganguly at the cricket. "Sorry, that was supposed to go for six, not four. May I try again?"