THIS was the extremes of the good, bad and ugly.

The good was, of course, Celtic, as they recorded one of their greatest wins in the Old Firm match – and surely yesterday that’s what this fixture was called by everyone - as they coasted to a 5-1 result which so easily could have been a repeat of the 7-1 League Cup final of 60 years ago.

The bad has to be Rangers. This was arguably their worst performance in a Glasgow derby, that match of 1957 aside, and at their own home. They were embarrassing, incapable of completing the simplest task on a football field, such as taking a corner, and the only player who can be confident of being at the club next season is Kenny Miller.

And the ugly? Well, someone ran on to the park from the Rangers stand as the Celtic players celebrated before being dragged away after exchanging pleasantries with Scott Brown. Television cameras then clearly caught one moron making monkey gestures, yes really, at Scott Sinclair.

Celtic were superb. They should have scored more; indeed, they were actually a bit sloppy at times in front of goal. How is that for a damning verdict on the Rangers performance?

Pedro Caixinha, again, got his tactics wrong, although Walter Smith would struggle to get a tune out of these players. They lacked intelligence, awareness, passion and, except Miller who scored, were unfit to wear the jersey.

Huge banners were hung from the Sandy Jardine stand in tribute to Jock Wallace, Bill Struth and Dave Cooper. What the Rangers fans of today would give for such legendary figures to be at their club.

Because this was a shameful performance, although it has to be said that Celtic played really well. Their supporters will talk about this day for a long time. That’s two 5-1 defeats over Rangers, two Old Firm semi-finals wins, and weeks away from a treble and unbeaten season and there were a few jaunts in the Champions League.

What a first season for Brendan Rodgers.

The Rangers fans were unhappy with referee John Beaton, but in truth he got most of the big decisions right, and even those who loudly heckled the official weren’t fooled.

Poor Myles Beerman. He was terrified every time Patrick Roberts ran at him, which was a lot, the central defence of Clint Hill and Danny Wilson were utterly wretched, while the midfield didn’t seem to know where to stand.

Apart from the consolation goal, it is tempting to say that Rangers did not do a single thing right in the match.

This isn’t Caixinha’s team but he is the manager and must take a lot of responsibility. His appointment always felt risky, right now it feels doomed.

But what could he do when in the first half James Tavernier sent a corner clear over the box and into touch 20 yards from the edge of the box?

Scott Sinclair missed two open goals, Leigh Griffiths hit the crossbar and two or three times the final pass, which would have led to a goal, wasn’t played.

And yet this was the first time Celtic have scored five goals at Ibrox. That’s how big the gap is.

When the fourth went in, thousands of Rangers fans left meaning they missed Mikael Lustig, a right-back, beat three men and curl a low shot into the corner of the net for Celtic’s fifth, helped by the Rangers players who by that stage weren’t even trying.

That’s the worst accusation which can be put to a professional footballer and I stand by it.

Those in blue weren’t interested. Once it became clear that Celtic had crossed the city with their A-game, it was a case of how many the win would be.

Scott Brown ran about as if he owned the place, Roberts was great, McGregor a constant nuisance, Jozo Simunovic’s first-half tackle on Miller, strong but fair, typified the tone, while Leigh Griffiths scored and was a threat all day.

As for the rest, nobody was under an eight out of 10. There were one or two Rangers players who were worth a mark of one and that was for turning up on time.

Rodgers will sign maybe three players at the most this summer, Caixinha needs to rip up that squad, if he can, and start all over again.

You wouldn’t pay a quid for that team.