UEFA.com takes its pick of the statistics involving sides in action in the second legs of the UEFA Champions League first knockout round over the next two weeks.
0 Appropriately, the number of UEFA Champions League ties that have ended scoreless after two legs, a run that will definitely continue as all of the first knockout round encounters have already produced goals.
1 The number of times a team has lost at home in a UEFA Champions League knockout first leg and gone on to win the tie – AFC Ajax against Panathinaikos FC in the 1995/96 semi-finals.
2 Goals scored by David Beckham on his last UEFA Champions League game at Old Trafford, where he returns after nearly seven years with AC Milan.
3 Sevilla FC have won all three home games against Russian oppostion and will go through if they make it four against PFC CSKA Moskva.
5 Only five two-legged knockout UEFA Champions League ties have gone to penalties, the first only in the 2004/05 semi-finals between PSV Eindhoven and Olympique Lyonnais.
6 Number of previous competitive trips to London by FC Porto, every one a defeat.
8 Consecutive home wins for FC Barcelona against German opposition since 1998 as VfB Stuttgart come to Camp Nou.
9 Headed goals by Wayne Rooney for Manchester United FC this season including two in the first-leg win at AC Milan.
15 Number of the 258 goals in this season's competition so far to have come in second-half added time though none so far in the first knockout round.
24 Times in a row Porto have successfully defended a first-leg lead away from home.
40 Years since ACF Fiorentina last reached a UEFA competition quarter-final, in the 1969/70 European Champion Clubs' Cup.
44 Shirt number worn by superstitious FC Bayern München midfielder Anatoliy Tymoshchuk who revealed last week that he tried to buy a flat on the 44th floor of a skyscraper.
68 Barcelona have had 68 per cent of the possession in their matches so far. At Stuttgart they had the ball for 44 minutes and 49 seconds to their hosts' 23 minutes and 2 seconds.
115 Shots by Porto in the competition this season, of which 56 were on target, both the highest of any club.
267 Minutes it took Michael Owen to score his four UEFA Champions League goals for United this season; a figure that will not change due to his hamstring injury.
620 Minutes since Olympique Lyonnais last conceded a goal, ten minutes into their 2-1 win against Paris Saint-Germain FC on 31 January, seven matches ago.
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