I've taken captures of the video so that I can explain with images where my english can't reach, but more importantly so that you lot comment the images.
I guess it's against copyright law, so I assume all the responsability in case brittish police want to arrest the poster of the images.

Image 1:

The image can remotely grasp the nice technical gesture of Gerrard's body when hitting the ball. It was not a bizarre goal. It was a great goal as a consequence of a great shot of Gerrard. The ball had a wicked swerve, and it bounced just before the keeper, and those ones are tricky. It's very normal those shots not being blocked, the lucky part came in the direction of the deflection .
Image 2:

Zonal defending is better than man to man defending. I think it's even better the mixed one, most of the defenders defendins in zone, except one or two men that are watched individually.
If you do zonal or mixed one you need concentration and tension, like Xabi is showing. In the first 10 minutes we had 2 situations of danger in set pieces that could have costed us points, and mind you, it has costed us points this season. It's not all about rotation believe it or not.
Image 3:

I like the double holding midfielder notion, but here Xabi for instance made a mistake. In the lower part of the picture, you have Torres in one of his falls to the wing. Gerrard, with a very disciplined attitude was covering his back, he then roamed to the outside to the box to look for a second chance.
The problem and mistake of Xabi is the big whole there is behind Kuyt. Xabi should have been there following the play. But they were both deep. Some disadjustments like that there were and we have to improve that, but I definitely like the Gerrard-Alonso-Mascherrano trio in the pitch.
Image 4:

Here instead Xabi got it right. He is the man behind Babel, and the man he stole the ball touched by Babel with the heel and that ended up in Gerrard's shot. This unsung movements are very important in a match.
I'm going to capture some images of the second half now.