Karim Kerkar set up the winner for Aron Wilford for the second game running as Clyde overcame 10-man Airdrie United in the CIS Insurance Cup second round.
Ian Harty celebrates with goalscorer Aron Wilford
Airdrie striker Stephen McKeown was sent off for a rash challenge on John Potter after only 20 minutes.
There were few chances until the winner as the home side packed their defence.
Algeria midfielder Kerkar miscued his shot after a lovely one-two at the edge of the box with 17 minutes left, but Wilford scrambled home the decider.
Airdrie Utd: McGeown, William Wilson (Hoey 79), Lovering, McManus, Christie, Docherty (Barkey 71), Vareille (Gow 71), Marvyn Wilson, Coyle, McKeown, Roberts.
Subs Not Used: McGowan, Hollis.
Sent Off: McKeown (20).
Booked: Roberts, Christie.
Clyde: Halliwell, Mensing, Bollan, Walker (Arbuckle 61), Potter, Sheridan, Bryson (Doyle 87), Gibson, Wilford, Kerkar, Harty (Gilhaney 79).
Subs Not Used: Greenhill, Morrison.
Booked: Harty, Gibson.
Goal: Wilford 73.
Referee: I Brines