Celtic succumbed to a damaging defeat on Tuesday night as Juventus scored three away goals at Celtic Park in their Champions League last-16 first leg.
Mistakes by defender Efe Ambrose, who only returned from international duty at the African Nations Cup on the morning of the match, led to goals by Alessandro Matri in the third minute and Mirko Vucinic in the 83rd.
Claudio Marchisio had scored the second goal in the 77th at the end of a flowing team move by the current Serie A leaders, who rode their luck before inflicting Celtic's joint-heaviest home loss in European competition.
For the opener, Ambrose misjudged a routine ball forward to leave Matri clean though on goal. The striker poked a finish through goalkeeper Fraser Forster's legs and the ball crossed the line by the time Kelvin Wilson slid in to clear away.
Kris Commons came every so close to equalizing for Celtic in the 28th minute, sending an overhead kick attempt spinning just wide of the post. Juventus goalkeeper Gianluigi Buffon never saw the play and was frozen, so he would have had no chance of making a stop if the effort had been on target.
Celtic continued to have the better of play as the half came to a close but they weren't sharp enough with the final pass or their shots to fully test Juventus.
Celtic were then taught a lesson in incisive football when they fell further behind.
The deftest of touches by Matri found Marchisio, who twisted in from the left of the penalty area to stroke the ball beyond Forster.
Marchisio was heavily involved as Juventus effectively killed the tie with a third goal, putting the ball on a plate for Vucinic to beat the keeper from close range after Ambrose was again at fault and caught in possession.
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Elsewhere, Goals by Ezequiel Lavezzi and Javier Pastore gave Paris Saint-Germain an important 2-1 away win at Valencia in a the first leg of their Champions League last-16 match Tuesday, which still ended badly for the French team as it allowed a late goal and had star striker Zlatan Ibrahimovic needlessly sent off in injury time.
The Ligue 1 leaders looked to be strolling into the quarter-finals when they took the lead in the 10th minute through Ezequiel Lavezzi and his Argentina team mate Javier Pastore added a second goal two minutes before halftime.
But Valencia clawed back into the series when Adil Rami latched on to a perfectly delivered free kick by Tino Costa in the 90th, and Ibrahimovic then earned a straight red card for a clumsy challenge on Andres Guardado, meaning he will miss the return leg.
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