Credit for that really goes to Beram Kayal. The Israeli midfielder has put himself back in the frame and although he got a bit lucky with his goal, I felt as though he put a decent shift in throughout the game.
He had a wee bit of a shaky start from which he recovered and it gives him a platform now to go on and recapture the kind of form that he showed when he first arrived at Celtic.
Similarly, the loss of Kris Commons wasn't felt as acutely as it might have been.
Teemu Pukki still looks a wee bit behind in terms of his sharpness but, overall, he contributed and put in a decent shift.
And, again, I think you really need to take your hat off to Charlie Mulgrew. For both club and country, he has been willing to play wherever he is asked and the big thing for me is how comfortable he looks in different positions.
When he came back to Celtic - he was Neil Lennon's first signing at the club - there were many of us who would have expected him to be a squad player.
However, he has really imposed himself to such an extent that I would imagine he is now one of the first names on the teamsheet.
He has really matured as a player and, against Ajax, he ended up playing about three different positions throughout the game.
But the fact of the matter is that, as a team, Celtic managed to successfully come through what I had bracketed as a must-win game.
While I think there was very little between the two teams, I do think that Celtic will go over to Amsterdam at the start of next month relatively confident they can get something out of the game.
If so, it could really give them a chance of getting that parachute of the Europa League place - or better.
The biggest thing for me is that in what is a relatively daunting group, Celtic have not looked out of place at any stage.
They may have been outpassed by Barcelona, but I don't think that they have been outplayed by anyone. And that will give them some heart going into the remaining three games in the group.
There was some talk about how much possession Ajax had, but much of that possession was with the goalkeeper!
Getting the three points was impressive, especially because when you go into a game like that where the need to win is so prevalent, it can be an extra pressure.
ThingS are now set up for an intriguing final three games and I fully expect that the match against Ajax over in Amsterdam will be very similar to the one on Tuesday.
I think it will be open and there will be chances. We have felt this season that Celtic have paid the price for not taking their opportunities in the Champions League in the previous two games against Barcelona and AC Milan, but I think this week Ajax may feel the same.
They hit a post and Fraser Forster had another big save to make, but overall I thought Celtic were worthy of the three points.
And once again, you can see just what Celtic Park provides on a night like that.
It doesn't make Lennon's men invincible, it doesn't faze experienced professionals, but it does lend an energy and a vibrancy to the place that reality transmits to the players on the pitch.
Their record at home is outstanding and many European teams wouldn't fancy taking Celtic on in their own stadium.
That may well come into play for the final home game in Glasgow against AC Milan at the end of November.