Manchester City and Liverpool all but sealed their passage into the Champions League quarter-finals with 4-0 and 5-0 wins, respectively. If they put their opponents to the sword in the return fixture they could make it among the biggest aggregate wins in the competition's history.
5. Bayern Munich v Barcelona - 2012/13 semi final
For: 7, Against: 0 - Winning margin: 7 (to Bayern)
4. Bayern Munich v Arsenal - 2016/17 Last 16
For: 10, Against: 2 - Winning margin: 8 (to Bayern)
3. Barcelona v Bayer Leverkusen - 2011/12 Last 16
For: 10, Against: 2 - Winning margin: 8 (to Barcelona)
2. Lyon v Werder Bremen - 2004/05 Last 16
For: 10, Against: 2 - Winning margin: 8 (to Lyon)
1. Bayern Munich v Sporting Lisbon - 2008/09 Last 16
For: 12, Against: 1 - Winning margin: 11 (to Bayern)