Airdrie manager Ian Murray says the Diamonds have shown they can compete at Championship level after a 1-0 Scottish Cup fourth round exit to Partick Thistle.
Brian Graham's first half goal for the Jags was enough for the Championship club, who finished with 10 men after centre-back Tunji Akinola was controversially sent off.
Then Diamonds goalkeeper Max Currie was subject to a red card call but referee David Munro chose not to brandish the dismissal after a collision with Scott Tiffoney.
