International Opta Facts
International Opta Facts - September 7th - 8th
Kazakhstan v Republic of Ireland
Kazakhstan and the Republic of Ireland have never met before in their current forms.
The Irish are unbeaten in 17 away from home (excludes neutral venues).
Ireland has not conceded a goal in seven matches on the road - a total of 684 minutes of football since they last conceded away from home.
Giovanni Trapattoni's men have only scored once in their last five matches.
Kazakhstan has won one of their last eight matches - drawing three and losing four.
The Kazakhs are unbeaten in four matches at home - winning two and drawing two.
June's 5-2 win over Kyrgyzstan marked the first time Kazakhstan had scored five in a single game.
Kazakhstan has won just one of their last nine competitive matches at home - a 2-1 win over Azerbaijan in June 2011.
Moldova v England
England have faced Moldova twice before, and won both games - scoring seven and conceding zero (3-0 in 1996, 4-0 in 1997).
England have not lost in 11 matches away from home (including neutral venues but excluding penalties) - winning eight and drawing three.
England has conceded just nine goals in their last 13 matches. They have kept eight clean sheets in this period.
Roy Hodgson is yet to lose as England manager (W5 D2, excludes penalty shoot-outs).
The last time England started a qualifying campaign in defeat was in October 2000 against Germany - a 1-0 defeat at Wembley.
October's 4-0 win over San Marino is Moldova's only win in their last 12 matches (W1 D2 L9).
Moldova have not scored since that win - a goalless run of 453 minutes.
The Moldovans has lost nine of their last 12 competitive matches - winning the other three.
Moldova haven't conceded a goal in 187 minutes of football at home.
Russia v Northern Ireland
Friday's match will mark the first time Russia and Northern Ireland have faced off.
Michael O'Neill is yet to win a game as Northern Ireland manager. He has picked up one draw and two defeats from his first three games.
In his three games so far, Michael O'Neill's Northern Ireland have conceded twelve goals in total, an average of four per game, and scored just three themselves.
The Green and White Army have conceded 21 goals in their last six matches.
Northern Ireland have won just two of their last 27 games (1-0 win over Slovenia in Sept 2010 and 4-0 win over Faroe Islands in August 2011).
Russia are unbeaten in their last eight games at home (W6 D2).
The Russians have not conceded more than one goal in any of their last 19 games. They have kept nine clean sheets in that time.
Wales v Belgium
Wales and Belgium have played eight times before with Belgium winning four, Wales winning three and one match ending in a draw.
All three of Wales' wins against Belgium have come at home, although Belgium were victorious the last time they visited in March 1997 (2-1).
The last time the two teams played - October 1997 - the current head coaches for both sides were involved. Marc Wilmots started and scored the third goal for Belgium in a 3-2 win. Chris Coleman was named on the bench for the Welsh.
Wales have lost their last three games in a row without scoring a single goal - all three games were at home.
Belgium have won just one of their last five - a 4-2 win over the Netherlands last month.
Belgium have not won away from home in their last six matches - drawing four and losing two.
Scotland v Serbia
Scotland and Serbia have never faced each other in their current forms.
In Craig Levein's 20 games so far as Scotland manager, he has won 10, drawn three and lost seven.
The Scots have scored in each of their last nine matches.
Scotland have only kept two clean sheets in their last 12 games - against Lithuania and Liechtenstein.
Serbia have not won any of their last five matches (D2 L3).
Serbia have won only one of their last eight away from home (D1 L6) - a 2-0 win over Armenia. The draw was against Cyprus.
The Serbs have only scored three times in total in their last nine games.