What a difference a day makes. Or three in Aberdeen's case.

If you don't believe me ask Joe Lewis. A wise man called Alex Smith once told me never to get too high when things are going well or too low when they are not. That phrase is ready-made for goalkeepers.

Now I'll freely admit I have always found them a strange bunch. Goalies. Most of the keepers I played with were totally bonkers. Why else would you want to get balls blasted at you from point blank range for a living?

To be honest, the ones I played against were safe as houses just by standing in their goals. But when a goalkeeper makes an error it's critical, so they need to have amnesia for the rest of the game.

When it was my own goalkeeper who made a mistake in a game you genuinely felt for them. But when a goalkeeper gifted a goal you took it gleefully. I wasn't fortunate enough to benefit from too many such catastrophes but I do remember Javier Sanchez Broto trying to be clever against me for Celtic at Parkhead one day by dribbling round me in his box.

I read him like the Beano, taking it off him for a tap in. It was the only tackle I made in my career. Bobby Williamson was ecstatic on the side. Did I feel sorry for him as I turned away to celebrate? No chance.

Lewis showed great mental fortitude to bounce back yesterday with a clean sheet against Motherwell to earn the Dons a gutsy 1-0 win after having an absolute nightmare on Thursday night against the same opposition, which resulted in the Dons meekly exiting the League Cup.

A few weeks ago against Hearts at Murrayfield, Lewis probably produced one of the finest individual displays I have ever seen to single handedly earn Aberdeen a point. Yet after his off day on Thursday the ghouls were out on social media saying he was a diddy.

I couldn't believe it. Tough school eh? No matter what Joe Lewis does now, some people will hark back to that night in Lanarkshire.

It's like the big Italian keeper Massimo Taibi - remember him? No, not the guy who played 400 games in Serie A. It's the one that let that trickler go through his legs for Manchester United. 

Unfortunately when a goalkeeper has an off day or makes a mistake it usually results in losing a goal, whereas in most other areas of the park you will get away with it.

But I would still hazard a guess Lewis had a few sleepless nights after his horror show at Fir Park the other night.

Aberdeen would have seriously fancied their chances in getting to Hampden again and going one better than they did last season.

Anything other than winning a trophy and finishing second again will do for the punters at Aberdeen.

Unfortunately, their goalie picked a massive game to have a stinker as there is no doubt, out of the three tournaments, the League Cup is the easiest to win.

That will be hugely frustrating for Aberdeen as the stats would certainly bear that out. But it's gone. The pressure is now on in the two remaining competitions.

Early in the season when squads are still fresh and healthy the opportunity is ripe to produce a League Cup shock. Over the last 15 years the likes of Livingston, Kilmarnock, Hibernian, Ross County, St Mirren and Aberdeen themselves have all tasted cup glory in that tournamen, so that certainly backs that up.

I was actually part of a Hibs team that inflicted Celtic's first domestic defeat back in 2003 in the aforementioned tournament.

An unbeaten Martin O'Neill side containing the likes of Larsson, Sutton and Thompson rolled into Easter Road to take on a Hibs team containing a lot of kids, albeit very talented ones.

Through a late Kevin Thompson goal we produced a shock and knocked out O'Neill's team of millionaires.

We were as high as kites after that game after turning over a top class team and maybe got ahead of ourselves a wee bit.

We were certainly brought back down to earth with a bang just a week later when we went to Parkhead and got horsed 6-0 against a pumped up Celtic out for revenge. Remember what I said about the highs?