Turkish side Trabzonspor stunned 2010 winner Inter Milan 1-0 Wednesday for a memorable Champions League debut.

Czech defender Ondrej Celustka scored in the 76th minute following the rebound of a shot from Halil Altintop that hit the crossbar.

Trabzonspor goalkeeper Tolga Zengin made key saves throughout the match at the San Siro and preserved the victory with a key stop on Inter substitute Coutinho in the 88th.

Trabzonspor only gained a spot in the group stage after Fenerbahce was removed by the Turkish Football Federation because it is under suspicion in a criminal probe into match-fixing.

In the other Group B match, French champion Lille and CSKA Moscow drew 2-2, giving Trabzonspor control of the group.

The loss deepens an early season crisis for Inter, which has lost all three of its fixtures thus far and is lacking order under new coach Gian Piero Gasperini.

Inter was beaten 2-1 by AC Milan in the Italian Super Cup last month and lost 4-3 at Palermo in its Serie A opener Sunday, allowing four goals for the first time in a league match in more than seven years.

''It's difficult without a doubt,'' said Inter goalkeeper Julio Cesar. ''In a moment like this we all have to stay together, work hard and find our way out of this situation.''

Gasperini was widely criticized for his three-man defense against Palermo and he reverted to a more traditional four-man back line for this match. It didn't make much of a difference, though, as Celustka placed his winning shot past Inter's most respected defender, Lucio, as two other defenders stood watching.

With Samuel Eto'o gone to Russian club Anzhi Makhachkala, Inter was without his main replacement, Diego Forlan. The Golden Ball winner at last year's World Cup is cup-tied after joining from Atletico Madrid.

Gasperini was also criticized for keeping key playmaker Wesley Sneijder on the bench at the start against Palermo. This time Sneijder played from the start behind strikers Mauro Zarate and Giampaolo Pazzini in a new 4-3-1-2 formation.

Still, Inter appeared sluggish at the start and didn't begin to create chances until the half-hour mark, when Zarate was denied by Zengin at the near post.

Pazzini then wasted a chance from the center of the area and Esteban Cambiasso shot high in the 44th - while Sneijder failed to convert a series of free kicks.

In the 55th, Gasperini sent on Ricardo Alvarez for Joel Obi in midfield and Diego Milito for Pazzini in attack.

Trabzonspor's Brazilian midfielder Alanzinho missed a long shot in the 62nd and Milito wasted consecutive chances in the 72nd and 73rd, first shooting directly at Zengin while unmarked in the center of the area, then heading wide.

This was Inter's first home match of the season, and the club's hard-core ''ultra'' fans remained silent during the first half to protest a players' strike that delayed the start of Serie A.