In-play betting is one of the biggest benefits of Betfair. It enables you to place bets right up to the final whistle or until the winning horse passes the post or even after that if it’s a photo finish. It also enables you to see how a game is unfolding as a result of the line ups, conditions and tactics. Prices constantly fluctuate throughout a game or race as the chances of a selection ebb and flow, this enables traders to constantly revise and improve their position.