Ultimately you can't play it safe in a knockout. As Chris indicates, eventually you get stuck with sudden death penalty shoot out. May as well try to break the deadlock before facing that.
I think they ought to have the penalty shoot-out *before* the match is played. That way it might encourage at least one team to try to score within the 90 (+30) minutes...
i could've saved us all 2hrs , if i'd told you what i'd read earlier. i was reading the bbc live update at 8.20, and danny murphy predicted pens then. lol