Snooker betting 'In-Play' involves placing bets on an event which has already started and is currently in progress. This is normally done by people watching the event in question who think that by watching it unfold they can predict more accurately what will happen next and which way the game is going. It is a much more fast paced and exciting way to bet as the odds can jump dramatically and change often depending on the sport and what happens, for example in a snooker game one bad shot may move the odds a little as the other player comes to the table with more chance of winning now, but it will be a smaller change than if a goal is scored in a football match.