I remember someone on this site, someone who knows their onions like garstonite or yorkie or albie, writing about Lucas and saying something like, "when he's on the pitch and the opposition has the ball and are attacking, I always automatically look to see where Lucas is...and if he's somewhere inbetween the opposition player in possession of the ball and our goalkeeper (as he usually is), then I can sit back and relax". It's not an exact quote, but the implication was that it was only once they got goalside of Lucas Leiva was there any chance of them scoring.
I took this idea into many matches after I'd read it and you know what, it was absolutely spot on and made for a much more relaxing match-going experience!