Birmingham City v Chelsea
Chelsea have won 13 and lost just one of the last 20 matches in all competitions with Birmingham.Frank Lampard has scored 18 goals in his last 26 FA Cup appearances.
Daniel Sturridge has scored eight goals in nine FA Cup appearances including seven in six starts for Chelsea in the competition.
Roberto Di Matteo has won only two of his six games as a manager in the FA Cup.
Di Matteo has won his only previous encounter against Birmingham City as a manager however (3-1 at West Brom in Sept 2010).
Birmingham have won only one of their last five matches in all competitions.
Chelsea have won just once in their last seven matches in all competitions.
Tottenham Hotspur v Stevenage
Stevenage haven't conceded a goal in their five FA Cup matches this season.Spurs have kept clean sheets in four of their last five FA Cup matches.
In eight matches between them, neither Spurs nor Stevenage have conceded an FA Cup goal this season.
Tottenham haven't lost in the FA Cup to a lower division side since Leicester outfoxed them in 2006.
Jermain Defoe has scored eight goals in his last 11 FA Cup starts.
Tottenham have suffered back-to-back defeats for the first time since September 2010 (all comps).
Stevenage have not won any of their last five games in all comps, drawing three and losing two.
