Real Sociedad were punished for failing to take their chances as they were beaten 2-0 by Shakhtar Donetsk thanks to Alex Teixeira's brace.
The home side had numerous chances to take the lead, but Shakhtar held firm and Teixeira showed his class in their opening game of Group A in the UEFA Champions League.
Jagoba Arrasate made three changes to his midfield for Sociedad's first European game since 2003, with Ruben Pardo replacing the injured David Zurutuza, Xabi Prieto and Markel Bergara all coming in to start.
Andriy Pyatov, Darijo Srna, Vyacheslav Shevchuk, Fernando, Tomas Hubschmann all came into the Shakhtar starting XI following their 3-2 defeat to Karpaty in the Ukrainian Premier League.
The opening exchanges were played at a frantic pace and Antoine Griezmann went close in the third minute with a low shot that had Pyatov stretching in the Shakhtar goal.
Carlos Vela had the best chance of the first half when he raced onto a throughball but his chip took a deflection and looped just wide of the goal with Pyatov stranded.
The home side were aggrieved to not get a penalty five minutes before the end of the first half when Srna brought down Prieto on the edge of the box.
Shakhtar came out with a new game plan in the second half and were proving hard to break down as they tried to counter when given the opportunity. Sociedad went close through Haris Seferovic but his effort was held well by Pyatov.
In the 65th minute, Shakhtar did counter to perfection and took the lead against the run of play through Teixeira. The midfielder got onto the end of Douglas Costa's teasing ball and drilled the ball into the bottom corner to silence the Sociedad crowd.
Sociedad tried to get level and they had a goal disallowed when Griezmann went through one-on-one. Vela then hit the crossbar from a free-kick but it was Teixeira who added further misery when he doubled the visitors' advantage.
The Brazilian cut in from the left-hand side before curling the ball into the bottom corner past the helpless Claudio Bravo, who was making his 200th appearance for the club.
Sociedad continued to push for a goal but in the end Shakhtar showed their European experience to pick up the three points.
|24||De La Bella|
for H. Seferović 69'
for A. Griezmann 74'
for Rubén Pardo 81'
|Lampard welcomes ´perfect´ NYCFC challenge|
|Shamrock Rovers 3 Progres Niederkorn 0: Waters at the double|
|Gerrard keen to emulate ´hero´ Beckham at Galaxy|
|UEFA Champions League Review: Red Imps make history, TNS breeze through|
|Ameobi extends Newcastle deal and heads for Cardiff|
|U.S. women celebrate World Cup victory with LA rally|
|Atletico agree Vietto deal|
|Silva appointed Olympiacos head coach|
|Presidential candidates unsure of Turan´s Barca switch|
|Toure keen to bounce back from ´disappointing´ campaign|
|El Salvador v Canada: Floro targets Gold Cup learning curve|
|Juve complete Zaza swoop|
|Costa Rica v Jamaica: Borges confident Wanchope´s men are ready|
|Marseille snare Sarr|
|Italy coach Conte to stand trial in match-fixing case|
|Castan keen to repay Roma´s faith|
|Rami thrilled to reunite with ´best coach´ Emery at Sevilla|
|Lusitans v West Ham: Tomkins seeks to silence minnows|
|Kagawa shines as Dortmund hit six in Japan|
|Alonso tips Gerrard for Galaxy glory|
|Firmino seeks self-improvement with Liverpool|
|Buffon bids farewell to Pirlo|
|Sterling named Europe´s ´most valuable´ young player|
|Casillas´ agent reveals Porto offer|
|Southampton bring in Martina|
|Dundee United accept Celtic´s Ciftci bid|
|McArthur pens new Palace deal|
|Bartomeu rules out Barca move for Pogba this year|
|Spurs have to be better now - Bentaleb|
|Milner expects central role|
|Micronesia thrashed again, this time 46-0|
|Marchisio: I cannot be Pirlo´s heir|
|Inter aiming for Champions League return - Icardi|
|UEFA Europa League Preview: Brondby and Slovan to protect handsome leads|
|Bentaleb pens new long-term deal at Tottenham|
|Barca agree Turan deal|
|FIFA bans Mayne-Nicholls|
|United States v Honduras: Klinsmann demands improvement ahead of Gold Cup opener|
|CONCACAF institutes extensive reforms in wake of FIFA corruption scandal|
|Mauri completes Milan move|
|City sign Turkey striker|
|Women´s World Cup final draws huge US TV ratings|
|My first Chelsea team better than current crop - Drogba|
|Bertrand set for lay-off after knee surgery|
|New five-year Juve deal for Marchisio|
|Allegri extends Juve contract|
|Koeman reiterates Alderweireld interest|
|Valencia bag Bakkali|
|New York City FC complete Pirlo capture|
|Panama v Haiti: Collat ready to challenge the best of CONCACAF|
|UEFA Champions League Preview: Harrison eyes TNS progression|
|FIFA sanctions Yemen for fielding ineligible player|
|Toulouse rubbish Ben Yedder exit reports|
|Mourinho ´knows what he´s doing´ with Falcao signing|
|Watford shell out club-record fee for Capoue|
|Braafheid signs Lazio extension|
|Nani finalises Fenerbahce move|
|Liverpool confirm O´Driscoll appointment|
|Liverpool have to start better - Lucas|
|USA simply too good - Sasaki|
|Portland Timbers 1 San Jose Earthquakes 0: Jewsbury wins it in stoppage time|
|No move yet for Van Persie|
|Lloyd wins Golden Ball, Silver Boot awards|
|Mascherano: I never grabbed Banega|
|Dunga requested Brazil not appeal Neymar´s suspension|
|United States 5 Japan 2: Lloyd stars with hat-trick|
|Fiorentina deny Inter criticism|
|Nani relishing Fenerbahce opportunity|