Portugal at the FIFA World Cup take place over the three years preceding the Finals, is used to determine which teams qualify for the Finals. The current format of the Finals involves 32 teams competing for the title, at venues within the host nation nations) over a period of about a month. The World Cup Finals is the most widely viewed sporting event in the world, with an estimated 715.1 million people watching the 2006 tournament final. Portugal have appeared in the finals of the FIFA World Cup on seven occasions, the first being in 1966 where they reached the semi final. Eusebio's nine goals at
1930 FIFA World Cup while Argentina hosted Yugoslavia on 3 August. Uruguay's aggregate goal difference of +12 over four games, at an average of +3 per match, remains the highest average goal difference per match of any World Cup champion, and the second highest of any World Cup Finals participant, after Hungary in 1954. With eight goals, Guillermo Stábile was the top scorer in the tournament. In total, 70 goals were scored by 36 players, with only one of them credited as an own goal. In 1986, FIFA published a report that ranked all teams in each World Cup up to and including 1986,