PREVIEW: WC Qualifier - Russia v Portugal

FOOTBALL - Click Read More to see some key facts concerning Friday’s World  Cup qualifier between Russia and Portugal.

> Russia have lost only one of their 52 World Cup qualification matches at home (44 wins, 7 draws, 1 defeat). In October 2009, they lost 1-0 to Germany.

> Russia is one of three teams that have not conceded a goal in their first two matches of the 2012 World Cup qualification cycle. The others are Romania and Switzerland.

> Portugal is one of five European countries that have qualified for each of the last seven major championships (ECh and WC since 2000). The others are Germany, France, Italy and Spain.

> Cristiano Ronaldo can play his 99th international match on Friday and can bring up the century on Tuesday. The Portuguese national team has produced only two centurions: Luis Figo (127) and Fernando Couto (110).

> Cristiano Ronaldo has scored in each of his last five official matches, for a total of 10 goals. His personal record is scoring in seven successive official matches (March-April 2008).