This post is a part of the section in this blog called "Match Situations" that concentrates on specific match situations related to parts of the Laws of the Game, version 2013/14. Your participation is crucial to make this blog's element give some value for referees and football enthusiasts in general.
You can have your say by giving your assessment on these situations in form of a comment underneath the respective posts. These comments should include a precise assessment and an additional explanation that strengthens your view if needed. Directly quoting from the current version of the Laws of the Game can be useful in some cases.
Match concerned: Zenit St. Petersburg 4:2 Paços de Ferreira (UCL)
Referee involved: Alberto Undiano Mallenco (ESP)
The video placed here is only posted for educational reasons.