Gary Caldwell has described his Celtic colleague Artur Boruc as the 'best goalkeeper in world'.
Boruc saved two penalties in the Hoops' UEFA Champions League third qualifying round shoot-out victory over Spartak Moscow.
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The Poland keeper also made a number of fine saves in the first half before producing his penalty heroics to book Celtic a place in the Champions League group stage draw.
Caldwell also played his part in the Celtic Park drama by netting his spot-kick, but the defender is in no doubt about who the hero of the night was.
"In the first half Artur made some great saves and we always knew we were favourites going into the penalties with him in goal," said Caldwell.
"He is without doubt the best goalkeeper in the world and it's great to know that he is behind us.
"The number of one-on-ones and penalties he saves says it all, the bigger the game the better he is which is a great asset for a player."
Caldwell, though, might have had a different opinion of Boruc after he had to break up a spat between the shot-stopper and his team-mate Lee Naylor shortly before half-time.
However, Caldwell believes the flashpoint was an example of the pressure Celtic were under.
"It was just two winners wanting to win a football match and the disagreement spilled over," Caldwell added.
"It happens at a club like this, maybe more than you think and it was the pressure of the night. It's something that's good and I don't think I would ever knock it out of anyone."