Besides Steven Gerrard’s performance, which, despite missing his third penalty of the night, was more than enough to see him awarded the Man of the Match, there were a number of interesting talking points from the match.

First was, of course, the sheer number of penalty kicks that referee Mark Clatternburg could have called over the 90 minutes. Marouane Fellaini’s first-half trip on Luis Suarez was let go, while Michael Carrick’s second-half swipe of Daniel Sturridge’s feet after Gerrard’s missed penalty was also not called.

Then there were the decisions that Liverpool perhaps got away with, namely the lack of contact over the visitors’ third penalty, which saw Nemanja Vidic sent off for a fourth time in this fixture for a tackle that didn’t actually connect—and a Glen Johnson handball inside the Liverpool box.

And then, there was David Moyes’ curious decision-making. It wasn’t limited to just deploying record signing and specialist No. 10 Juan Mata on the wings again. It was the lack of instant reaction from the United manager that saw his first substitutions take place on 76 minutes, a full half-hour after the hosts went 2-0 down.

Away from these three general observations, we felt there were four instances that symbolized the match and its eventual outcome. Let’s take a more detailed look at four scenarios that occurred throughout the match.

Robin van Persie, deep-lying playmaker?

That Robin van Persie and Wayne Rooney have spectacularly failed to strike up a useful and threatening strike partnership this season has not gone unnoticed—but their lack of interplay on Sunday will have been very disappointing for Manchester United fans.

More alarming, however, was the manner in which van Persie and Rooney tried to link up with each other (or at least make it seem like they were).

So isolated was van Persie up front that he often drifted out to the left wing in pursuit of the ball, depriving United of any forward presence up front and in theory allowing the supporting midfielders—and Rooney—to charge forward.

But after so many jokes at the Red Devils’ expense in recent months about their crossing-only attacking play, Sunday was yet another exhibition of why their incessant crossing is so unfruitful.

Instead, his next move is to play a cross-field ball that ends up cleared away all too easily by the Liverpool rearguard. Not a very inspiring attacking approach.

The sad thing was, this was only one of the many times this sequence occurred.

Manchester United’s undisciplined defending

By our count, Liverpool could’ve easily had five penalties called on Sunday—a remarkable stat given that their first, after Rafael da Silva’s handball against Luis Suarez, was the first penalty conceded at Old Trafford in the Premier League since December 2011.

While Rafael’s handball was all down to individual carelessness (and he could arguably have been issued a second yellow card), the second penalty was very much down to a collective lack of discipline in the United defence.

In the immediate buildup to the penalty, Jordan Henderson deserves much of the credit for spotting an excellent Joe Allen run into the box and then producing an exquisite flick over the top to find his fellow midfielder. Allen’s use of the body allows him to take control of the ball, which puts the United defence under pressure.

But let’s take a look at the positional errors that the hosts have committed in this single piece of defensive play.

United left-back Patrice Evra (blue circle on the left) arrives late on the scene and is dragged back by the ball, while Marouane Fellaini (blue circle on the right) also follows the ball into a zone very much out of his own. Evra and Fellaini have almost switched positions here—bear in mind that Evra should have been tracking Sterling and Fellaini, as the defensive midfielder, should have picked up Henderson or Allen.

These positional errors leave centre-backs Phil Jones and Vidic exposed and under pressure from Allen’s run, as Vidic (yellow circle on the right) is also dragged toward the ball and thus behind Allen’s run (white arrow).

Jones’ disadvantageous starting point (yellow circle on the left) means that he could’ve left Vidic come into Allen’s path (red box) and tackled on his right foot, but the former’s rash movement bundles Allen over and concedes the penalty.

2-0 to the visitors.

The movement and magic of Suarez and Sturridge

It’s a testament to how badly United fared that Liverpool didn’t even really get out of their first gear over the 90 minutes and still came away with a comprehensive win.

Arguably the most impressive (and productive) piece of forward play from the Reds’ league-leading strike force came when Luis Suarez took advantage of a Daniel Sturridge mishit and finished with aplomb past David de Gea to take the score to 3-0.

Instead it hits Phil Jones and lands at Suarez’s feet, who controls and finishes it with his left foot past de Gea.

That this play started from a corner was instrumental in the buildup to the goal. Martin Skrtel had stayed forward after the corner and made his presence felt in the penalty area: Jones (yellow circle) has his attentions occupied by Skrtel.

Patrice Evra (blue circle) is once again in no-man’s land as he is woefully out of position once more, while none of United’s players tracked the brilliant run that Suarez timed to perfection. As a result, Jones is caught in two minds, and by the time the ball arrives at Suarez’s feet, Jones and all of his defensive colleagues are nowhere near Liverpool’s No. 7, who couldn’t miss from there.

While the goal ultimately came about in a fortuitous manner, with the ball ricocheting off Jones’ legs to find Suarez, the manner of the runs and the positioning in the buildup suggest that this goal could very easily have been conjured deliberately.

If Sturridge had spotted Suarez’s run and decided to play him in with a deft pass, Suarez would still have been in with an easy finish. More importantly, while Sturridge inadvertently turned creator here, it’s not difficult at all to envision a role reversal here, with Suarez pulling the strings and feeding Sturridge through with an exquisite pass.

The fact that both of Liverpool’s strikers could have played either part in this goal shows exactly why the Reds are increasingly far and away the most prolific scorers in the Premier League.

Liverpool still have a midfield problem

With all this said, however, we will also pick one scenario that focuses on the deficiencies that Liverpool still have, even if it wasn’t at all exploited during the game. It’s just as food for thought and a note of caution for Reds fans.

Toward the bottom of the screen, Rafael is on the charge with the ball on the right flank. Right before this scene, Rafael’s good combination play with Adnan Januzaj leaves Jon Flanagan for dead, and the Liverpool defender is now forced to chase back after missing his initial tackle (blue circle and arrow).

As Daniel Agger is drawn out of position to mark the supporting Januzaj and Martin Skrtel is trying to maintain a presence in the penalty box, it’s now left to Steven Gerrard to track back and cover for Flanagan’s positional mishap (yellow circle and arrow).

However, Gerrard’s run toward United’s right means that his customary central defensive midfield zone has been left vacant, leaving a huge gap in the middle (red box) for Wayne Rooney (white circle) to storm into.

Rafael does subsequently find Rooney on the edge of the area, and the United forward unleashes a shot that Mignolet parries.

Fortunately for Liverpool, they held out to end the half 1-0 up and scored immediately after the second half.

From there on out, it was just a matter of wrapping up the three points. But as convincing as Liverpool looked on Sunday, they still have some work to do on the training ground.

This article first appeared on Bleacher Report, where I contribute regularly on Liverpool and the Premier League.