Celtic brought Manchester City back to earth in their Champions League tie in Glasgow, according to former City midfielder Didi Hamann.
The Scottish champions scored three as they claimed a surprise point at home to the English side.
Speaking on RTÉ, Hamann said that City's defending let them down in Scotland as they conceded from a set piece, as well as at the beginning of each half.
Celtic went ahead three times in the tie, and Hamann said this cost the English side as they were forced to chase the game.
"In the end that cost them because they had to come back three times from going behind," he said.
"In the end they didn’t have enough, and credit to Celtic they really deserved that draw tonight."
However, Hamann feels City manager Pep Guardiola will not be too upset by the setback.
"Guardiola won't be too unhappy with that result because it makes everyone aware they won’t have it all our own way," Hamann said.
Fellow RTÉ analyst Liam Brady praised the Celtic performance in what was "a pulsating game."
While the Scottish champions got a great start in both halves thanks to goals from Moussa Dembele, he admitted that when City made it 3-3 in the second off he felt "they might end up with nothing."
Celtic "dug in" however, with Brady singling out Scott Brown and goalscorers Dembele and Kieran Tierney for special praise.
Former Republic of Ireland winger Damien Duff said that while City were missing Kevin De Bruyne, they still had the quality to win the tie.
"They haven't played well tonight but they scored three goals and could have scored more," the Dubliner said.
