Listen to Sportsound commentary from Rugby Park
Both sides hit woodwork before O'Riley turns in rebound for opener after Dennis parries McGregor shot
Ndaba denied equaliser by superb goalline block from Alistair Johnston
Phillips turns Lyons cross into his net to give Kilmarnock deserved leveller & Kennedy slips shot beyond Hart for late winner
Polworth & Kennedy come in for hosts; Carter-Vickers not in Celtic squad & Kyogo on bench again
Kilmarnock beat Celtic in Viaplay Cup in August
Matty Kennedy
Oh my word!
Danny Armstrong and Matty Kennedy have both been outstanding, and the former slips through the latter to finish past Joe Hart.
But how easy is that? The Celtic defending... awful.
Kilmarnock 1-1 Celtic
The cross is deep from Liam Polworth and Joe Hart gathers.
Kilmarnock 1-1 Celtic
Stephen McGinn
Former Kilmarnock midfielder on BBC Sportsound
Marley Watkins has been brilliant since he's come on, Nat Phillips hasn't been able to handle him.
Kilmarnock 1-1 Celtic
Marley Watkins wins a cheap, cheap foul as Nat Phillips just pulls him to the deck.
The Celtic defender has struggled with the substitute.
Kilmarnock 1-1 Celtic
Five minutes of the 90 remain at Rugby Park.
There's a chance or two left in this.
Kilmarnock 1-1 Celtic
Luis Palma is the man who will make way for James Forrest.
A groggy Matty Kennedy is also back on the pitch after a head knock.
He doesn't look in great shape...
Kilmarnock 1-1 Celtic
Eighty-two on the clock.
James Forrest is stripped for Celtic.
Kilmarnock 1-1 Celtic
Stephen McGinn
Former Kilmarnock midfielder on BBC Sportsound
Marley Watkins has got to be doing better.
A major let off for Celtic there.
Kilmarnock 1-1 Celtic
Here come Killie again.
This time it's Marley Watkins who stabs towards Joe Hart, but it's over.
Celtic are really shaky.
Kilmarnock 1-1 Celtic
A ball bounces about the Celtic box and Stuart Findlay pokes one towards goal.
Joe Hart gladly claims.
Kilmarnock 1-1 Celtic
An easy booking for Danny Armstrong, who hurts himself while clattering into Greg Taylor late.
Armstrong's off the pitch but takes one out of the unofficial dart arts book by rolling back on.
Quite funny.
Kilmarnock 1-1 Celtic
Stick of twist, Killie fans? Your boys will fancy this now.
Brendan Rodgers twists. Here comes Kyogo and he replaces Tomoki Iwata.
Kilmarnock 1-1 Celtic
Stephen McGinn
Former Kilmarnock midfielder on BBC Sportsound
Brad Lyons has just asked a question of his Killie forwards and Celtic defenders.
Can you score this? Can you defend it? Well, Nat Phillips did one.
This is winnable. Derek McInnes won't be changing anything.
Nat Phillips (own goal)
Some finish, just a shame for Nat Phillips it's into his own net.
Brad Lyons gets up the right-hand side and drills one low to the front post and the on-loan Liverpool defender slides the ball in.
Killie deserve that. They really do.
Kilmarnock 0-1 Celtic
If you're listening on Sportsound, you'll hear the background noise of the rain pelting it down at Rugby Park.
Quite soothing, tbh.
Kilmarnock 0-1 Celtic
Spaces are appearing for Celtic on the break as Luis Palma doesn't connect too cleanly with an attempt.
Easy for Will Dennis.
Kilmarnock 0-1 Celtic
Mikey Johnston's afternoon is over.
He's placed by fellow winger Yang.
Kilmarnock 0-1 Celtic
Not far away at all.
Matt O'Riley charges forward on the break before dragging a shot on his weaker foot just wide of the far post.
Kilmarnock 0-1 Celtic
Greg Taylor looks to float one to Killie's back post, but Will Dennis claims well under pressure.
Kilmarnock 0-1 Celtic
Stephen McGinn
Former Kilmarnock midfielder on BBC Sportsound
Marley Watkins will come on and partner Kyle Vassell and that's positive.
Celtic haven't pinned Killie back, they're getting plenty crosses into the box.