Nick McPheat
BBC Sport Scotland at Hampden

Cheers of encouragement are turning into murmurs of discontent from some sections of the Celtic support as this heads towards half-time.

Callum Davidson will be really happy with Saints' response to that opening 10 minutes.

Celtic have faded as the half has progressed.

Kygo Furuhashi's low cross causes panic inside the Saints six-yard box and, when James Brown's fluffed clearance falls to Liel Abada, only a desperate Craig Bryson lunge prevents the winger finding the target and it deflects over the crossbar.

Allan Preston
Ex-St Johnstone defender on BBC Sportsound

Image source, SNS

Craig Bryson has another sight at goal and this time the St Johnstone midfielder this time finds the target.

However, it's straight at goalkeeper Joe Hart, who holds at the second attempt.

Jota appeals for a penalty as the Celtic winger goes down, but the Portuguese was simply beaten by the Saints defender's greater strength.

Image source, PA Media

St Johnstone are beginning come more into the game and Craig Bryson is dreaming of his goal in a famous Clyde cup win over Celtic as he sets sights on goal from 20 yards.

However, the former Derby County midfielder's shot is well wide.

On-loan Tottenham Hotspur centre-half Cameron Carter-Vickers is unable to get his effort following a corner on target as Celtic continue to create the better chances.

Nick McPheat
BBC Sport Scotland at Hampden

Callum Davidson is barking at his St Johnstone players to press harder on Celtic.

They sense they are getting somewhere here. They've weathered the early storm and that Joe Hart incident was all a bit nervy.

Pat Bonner
Former Celtic goalkeeper on BBC Sportsound

So close to disaster for Celtic and goalkeeper Joe Hart.

Centre-half Stephen Welsh plays a back post across the six-yard box and the former England number one delays his clearance so long that it bounces off sliding Saints forward Michael O'Halloran and rebounds just wide of the far post.

Allan Preston
Ex-St Johnstone defender on BBC Sportsound

St Johnstone have survived Celtic's whirlwind start and are beginning to venture out of their own half.

Nick McPheat
BBC Sport Scotland at Hampen

Four times inside the first seven minutes Jota has shown what a threat he can be.

That 'Rabona' cross was absolutely sensational.

The Portuguese winger is well up for it. He's cheerleading the rest of his side, throwing his arms up and screaming encouragement.

It's all Celtic and what another sublime touch by Jota.

The on-loan Benfica winger's fancy flick cross has Saints all sorts of trouble inside their own penalty box before it's booted clear.

Allan Preston
Ex-St Johnstone defender on BBC Sportsound

It looks like Celtic must score as Jota races clear down the left and cuts the ball back to David Turnbull.

But somehow the Scotland midfielder scoops his side-footed effort over the crossbar from 12 yards.

This will feel very much like a home game for Celtic considering there are only about 2000 Saints fans at a packed Hampden.

Image source, SNS

And we're off at Hampden.

Who will head for the final? Thumbs up for holders St Johnstone, thumbs down for multi winners Celtic.

An emotional moment as Hampden is filled with a minute's applause for former Celtic great Bertie Auld.

St Johnstone are the League Cup holders, but Celtic will be hot favourites to progress to the final this time considering they are unbeaten in 20 meetings with the Perth side since a 2-1 defeat at McDiarmid Park way back in May 2016. The Glasgow side have won the latest three.

Not only that, but Ange Postecoglou's side are unbeaten in their latest eight outings - winning seven of them - and, if you discount their loss to Bayer Leverkusen in the Europa League, they have not been beaten domestically in 10.

Callum Davidson's Saints have only won once in five outings, scoring just twice during a run that included a 2-0 defeat at Celtic Park last month.