Here's an interesting fact that may have a big influence in the way certain players will perform in these QF 2nd leg matches:
Disciplinary situation in the Champions League ahead of this week’s quarter-final, second-leg matches:
Liverpool v Arsenal
Misses next match if booked:
Emmanuel Adebayor, Gaël Clichy, Emmanuel Eboué, Aleksandr Hleb, Denilson (all Arsenal)
Jamie Carragher, Steven Gerrard, Fábio Aurélio (all Liverpool)
Chelsea v Fenerbahce
Misses next match if booked:
Deivid, Mateja Kezman, Diego Lugano, Selcuk Sahin (all Fenerbahce)
Michael Essien (Chelsea)
Manchester United v AS Roma
Misses next match if booked:
Marco Cassetti, Cicinho, Daniele De Rossi, Max Tonetto, Mirko Vucinic, Philippe Mexès (all AS Roma)
Nani, Patrice Evra (both Manchester United)
Barcelona v Schalke 04
Misses next match if booked:
Marcelo Bordon, Rafinha, Carlos Grossmueller, Kevin Kuranyi, Fabian Ernst (all Schalke 04)
Lionel Messi, Yaya Touré, Rafael Marquez, Carlos Puyol, Gabriel Milito (all Barcelona)