Castrol EDGE Index explained

Supporters will be able to track the performance of every player at UEFA EURO 2012 courtesy of the Castrol EDGE Index.

Using the latest tracking technology to analyse and rank individual displays the Castrol EDGE Index charts a player's every movement, pass, shot and tackle to gauge the impact of such actions on their side's ability to score or concede a goal. A team of Castrol Performance Analysts will assess the data to award each player a score out of ten.

For example, the zone on the pitch where an action occurs is crucial. Players receive points for each successful pass they complete but how many will depend on which zone the ball is passed from and received in. Similarly, the number of points awarded for tackles, interceptions and blocked shots varies depending on the zone on the pitch where they are made.

Spain's metronomic midfielder Xavi Hernández topped the inaugural Castrol EDGE Index at UEFA EURO 2008 as La Roja ended their 44-year wait for international silverware, but who will shine brightest in Poland and Ukraine?

The tournament Castrol EDGE Index will be available on UEFA.com after each round of games, starting from 11 June, although there will be a short analysis of every match at the finals.