Alan Hansen's column

By Alan Hansen BBC Sport football expert

Manchester United's win at Bolton - coupled with Chelsea's draw at Birmingham - has breathed fresh life into a Premiership title race that was starting to bear all the hallmarks of a formality.

Mourinho's Chelsea would still need to do a real Devon Loch to hand Man Utd the title

I was always told at Liverpool that "it's never over until it's over", but it would still take some collapse from Jose Mourinho's men to hand United the crown.

I still take Chelsea to win the league, but there is no doubt they will be casting a glance over their shoulders.

And you can bet that Sir Alex Ferguson will be turning up the psychological heat.

He is the master in these situations, stressing to his players that they can do it, but Mourinho is a proven winner and has not shown any signs of cracking under pressure before.

But when players come under pressure, it can suddenly make them look average or mediocre, which is what United will be hoping for and what Chelsea will hope to avoid.

Despite what they say, everyone reads the papers and sees what is being said. It all adds up and puts pressure on each and every individual.

If Chelsea are looking for positives, they are not conceding goals or getting turned over by teams, despite not being at their best.

What they lack is a killer goalscorer. Didier Drogba has plenty of attributes, but composure in front of goal wouldn't be one of them.

Hernan Crespo was a great goalscorer, but seems to have lost it at the moment. He has missed so many chances recently it's unbelievable.

As Chelsea's goals have dried up, United have gone on one of those runs that builds confidence.

They looked ordinary when they lost to Liverpool in the FA Cup, but things have turned around and now they are flying.

The confidence has come back - and that is the most elusive and yet valuable commodity in football. Where does it come from? Where does it go?

I recall when I was at Liverpool in 1986 we lost to Everton at Anfield and were 13 points behind them. It looked all over, but we went on an incredible run, built confidence, and ended up winning the league.

Everton didn't do much wrong, we just got on that roll.

Sir Alex Ferguson will turn up the psychological heat - he is the master in these situations

The following season the reverse happened. We were ahead, but suddenly Everton picked up momentum and ended up overtaking us.

This is what United will be hoping happens, but I still have to go with Chelsea because they have got points on the board and they are not shipping goals.

But make no mistake, United will still be believing and hoping the finishing line doesn't come too soon for them.

If Chelsea don't win the league, it will be a real Devon Loch collapse.

But I look at their strength in depth and characters, and the players they have got like John Terry and Frank Lampard, and think they will achieve the marvellous feat of back-to-back titles.

At the other end, Portsmouth are mounting an incredible surge to escape the drop after looking doomed shortly after Harry Redknapp arrived.

Harry said himself they were in big, big trouble, and yet a season can turn on single moments, such as Pedro Mendes' winner against Manchester City with virtually the last kick of the game.

Now they are on a roll and looking more in form than their rivals Birmingham and West Brom.

The Baggies were easily turned over by Liverpool, but Birmingham's point against Chelsea will feel like a win to them.

But out of the three, Pompey look the best at the moment and Harry could yet pull off another Houdini act.

Teddy Sheringham is still going strong as he celebrated his 40th birthday by playing in the Premiership - and he must be getting on because I played against him.

It was when he was emerging at Millwall in a good side playing up front alongside Tony Cascarino.

You could see even then he was a very good player, and he has gone on to prove he is an outstanding professional and a real class act.

Teddy was never blessed with a lot of pace, but I played alongside Kenny Dalglish, who wasn't the quickest either but was one of the greatest players ever.

Bob Paisley used to say "the first two yards are in your head" and Teddy is living proof.

If your game is based on pace, there is always the danger of being robbed of your prime asset in your later years. This doesn't apply here.

Teddy is never going to lose his touch, intelligence, and the not inconsiderable quality of his great ability in the air.

It is a tribute to him that West Ham were only too happy to sign him up for another year - he is a credit to football and himself.