Postpublished at 49 mins
Rangers 0-1 Partick Thistle
The Rangers substitutes combine as Ryan Kent slides a lovely ball through for Kemar Roofe but the former Leeds man can only hammer his shot wide.
FT: Rangers 3-2 Partick Thistle: Holt gives Thistle opener before Colak equalises; Tavernier then has penalty saved
Tillman robs Thistle of ball after injury restart to score; Rangers boss Beale orders hosts to then allow Thistle to walk in equaliser; late Sands goal gives Rangers lead again
Penultimate tie in round of 16
Quarter-final draw follows on Monday
Colin Moffat
Rangers 0-1 Partick Thistle
The Rangers substitutes combine as Ryan Kent slides a lovely ball through for Kemar Roofe but the former Leeds man can only hammer his shot wide.
Rangers 0-1 Partick Thistle
James Tavernier curls a peach of a cross in from deep and it takes an awkward bounce off the shin of Connor McAvoy on its way out for a corner.
Rangers can't conjure anything from the set-piece.
Rangers 0-1 Partick Thistle
Here we go for the second half.
HT: Rangers 0-1 Partick Thistle
Ryan Kent and Kemar Roofe are coming on for Rangers...
Todd Cantwell and Ianis Hagi are the men making way.
HT: Rangers 0-1 Partick Thistle
Kenny Miller
Former Rangers striker on Sportsound
Jamie Sneddon has had a quiet day in the Thistle goal.
No shots on target isn't good enough for Rangers.
HT: Rangers 0-1 Partick Thistle
Liam McLeod
BBC Scotland commentator on Sportsound
Partick Thistle haven't beaten Rangers since May 1993.
Partick Thistle haven't beaten Rangers at Ibrox since Halloween 1981.
Partick Thistle haven't beaten Rangers in the Scottish Cup since 1921.
Rangers are in trouble.
HT: Rangers 0-1 Partick Thistle
Kris Doolan
Former Partick Thistle striker on Sportsound
To a man, Partick Thistle deserve to be in the lead.
Ian McCall will be delighted, not only with the scoreline but with the way in which they've played.
HT: Rangers 0-1 Partick Thistle
Alan Hutton
Former Rangers & Scotland defender on Viaplay
For me, it's not a penalty. Colak has no time to react. He is using his arm for leverage, then he's turning his body.
HT: Rangers 0-1 Partick Thistle
Rangers have been rather narrow.
Todd Cantwell, Ianis Hagi and Malik Tillman are the trio behind striker Antonio Colak and they are all more comfortable in a central positions.
Well, well... How about that scoreline?
Partick Thistle have a shock lead thanks to a Kevin Holt penalty, given after referee David Munro studied a handball offence on his monitor.
The Championship side have defended stoutly and have created the best chances, with Allan McGregor making good saves to deny Kyle Turner and Scott Tiffoney.
Rangers have had most of the ball but haven't really created anything.
Rangers 0-1 Partick Thistle
Kris Doolan
Former Partick Thistle striker on Sportsound
Rangers are playing good football but it's all in front of Thistle.
Rangers 0-1 Partick Thistle
Thistle's veteran forward Brian Graham is cautioned after catching Ben Davies with a leading elbow.
Rangers 0-1 Partick Thistle
Rangers have upped the pace since falling behind but can't find a chink in the well organised Thistle back-line.
Rangers 0-1 Partick Thistle
Martin Dowden
BBC Sport Scotland at Ibrox
Ian McCall is living out his wildest dreams right now, as are the Thistle fans who went ballistic as Kevin Holt despatched that penalty.
It wasn’t a smash and grab. The second tier side have played well and have created the best opportunity with Allan McGregor’s save extraordinary minutes before the opener.
A seismic cup shock is on. The home fans are very restless and will demand an immediate response.
Rangers 0-1 Partick Thistle
Kenny Miller
Former Rangers striker on Sportsound
I think Antonio Colak has been really, really hard done by there.
Rangers 0-1 Partick Thistle
Kris Doolan
Former Partick Thistle striker on Sportsound
Fantastic penalty. Cool as you like. Look at the Partick Thistle fans, that's what they wanted to see.
Kevin Holt
The Thistle fans are going bananas as Kevin Holt slots home a composed spot-kick.
Rangers 0-0 Partick Thistle
David Munro has given it!
Rangers 0-0 Partick Thistle
Did the ball hit the hand of Antonio Colak when Rangers defended that corner? It was headed against him at close range in the build up to the chance for Scott Tiffoney.
The ref is off to the screen...
Rangers 0-0 Partick Thistle
Kenny Miller
Former Rangers striker on Sportsound
This is a brilliant spell for Thistle and that's two great saves in the space of a minute from Allan McGregor.