What an stunning result for Alloa as they roar back from 2-0 down to see off Rangers. The Wasps are off to the Challenge Cup Final.

Celtic's Kris Commons has a dig but Partick keeper Paul Gallacher deals with it well.

We're into stoppage time and as it stands Alloa will meet Livingston in the Challenge Cup Final.

An amazing comeback at Recreation Park. Greig Spence brilliantly slots the ball into the bottom corner of Steve Simonsen's net from a delivery from the left.

Celtic manager Ronny Deila makes a double switch with John Guidetti and Aleksandar Tonev off and Kris Commons and Stefan Scepovic on.

Partick's Kallum Higginbotham makes way for Steven Lawless.

Rangers skipper Lee McCulloch is booked for a foul on Greig Spence.

Rangers sub Jon Daly collects an Ian Black free-kick in the area, flicks it up and nods it goalwards from a few yards out but keeper Craig McDowall is equal to it, palming the ball over the top.

Rangers boss Ally McCoist takes Fraser Aird off, with David Templeton on in his place.

As Celtic celebrate their opener, Alan Archibald makes a change for Partick as Kris Doolan comes on for Ryan Stevenson.

BBC Scotland's Richard Wilson at Celtic Park

"Celtic finally make the breakthrough. A well-flighted Johansen free-kick falls to Virgil van Dijk inside the area, he cannot make full contact with his head, but the ball drops to his feet and he stabs home from close range."

Virgil van Dijk has looked a threat all night and he volleys the ball home from eight yards to send his side into the lead.

Edward Ferns is again the creator with a great delivery from the right that is perfect for Ryan McCord to slot home, The Rangers defence didn't look too clever for that one and it's all square.

Partick are enjoying a decent spell of possession at Celtic Park with Ryan Stevenson and James Craigen looking lively.

Alloa get right back into this game, Mark Docherty provides the delivery from the left and Greig Spence is in acres of space to nod home.

Alloa boss Barry Smith also makes a change, sending on Edward Ferns for Adam Asghar.

Rangers boss Ally McCoist makes a change with Jon Daly on in place of Kris Boyd.

With 25 minutes left to play at Recreation Park, Barry Smith's Alloa side have it all to do to set up a Challenge Cup Final date with Livingston.

Kenny Miller does the set-up work with some strong hold-up play and when he knocks it towards Dean Shiels the Northern Irishman nicks in front of a defender and curls the ball into the bottom right corner.

A moment of panic for Steve Simonsen as a cross from Ryan McCord pings off defender Bilel Mohsni and the Rangers keeper needs to make a flapping save at his near post.