Abstract: A method provides on-site or remote viewers with real-time computer generated graphics simulating the racing venue and contestants by incorporating past and current data to forecast the ranking of racing contests. The method comprises the steps of drawing existing contestants by means of computer graphics and arranging the contestants along the start line of the existing racing venue; inputting said existing past data and existing current data just before starting of a race into all of the contestants; allowing the contestants to race on a display based on the respective data; and forecasting in advance actual race ranking from the states of said contestants and race results.