Table 1 Variables studied in the Spanish League 2008-2009. Group of variables Variables or game statistics or performance indicators Variables related to goals scored Goals Scored, Total Shots; Shots on Goal. Variables related to offense Attacking moves, Box moves, Crosses, Offsides committed, Losses of possession, Fouls received, Assists, Passes Made, Successful Passes Made, Dribbles, Successful Dribbles, Ball possession. Variables related to defence Gains of possession, Fouls committed, Yellow cards, Red cards, Clearances.