Ayr United v Celtic, 13 October 1999
| Score | 4-0 to Celtic |
| Referee | John Rowbotham |
| Competition | Scottish League Cup 3rd round |
| Venue | Somerset Park, Ayr |
| Attendance | 8,421 |
0 Ayr United
Goals:
Starting lineup:
Goalkeeper
Craig Nelson
Defender
Mark Campbell
Defender
David Craig
Defender
Dave Rogers
Defender
Paul Shepherd
Defender/Midfielder
Neil Duffy
Full back
John Robertson
Midfielder
John Davies
Midfielder
Marvyn Wilson
Forward
Glynn Hurst
Forward
Nigel Jemson
Substitutions:
| Michael Reynolds for Nigel Jemson | 55 |
| Gary Teale for David Craig | 73 |
Cards:
| Dave Rogers | Y | |
| Michael Reynolds | Y |
4 Celtic
Goals:
| Mark Viduka | 58 |
|
|
| Regi Blinker | 65 |
|
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| Johan Mjällby | 71 |
|
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| Bobby Petta | 88 |
|
Starting lineup:
Jonathan Gould
Goalkeeper
Jackie McNamara
Defender
Johan Mjällby
Defender
Olivier Tebily
Defender
Alan Stubbs
Defender/Centre back
Regi Blinker
Midfielder
Craig Burley
Midfielder
Lubomir Moravcik
Midfielder
Vidar Riseth
Midfielder
Mark Burchill
Forward
Mark Viduka
Forward
Substitutions:
| Morten Wieghorst for Craig Burley | 72 |
| Bobby Petta for Lubomir Moravcik | 72 |