Whether you bet on the fixed-odds, spread-betting or betting-exchange markets, you need to know exactly how to trade during a sporting event if you're to maximise your profits.

Cast your minds back to the year 1990. New Order are top of the charts, England are in the semi-finals of the football World Cup, Gazza's tears are streaming down his cheeks, Nessun Dorma is playing - it all seems like yesterday.

You ring up the bookies and check the prices of the World Cup final and, just before you place your wager, you ask the bookie if he's betting the game in-running.