Newcomer Mathieu Valbuena bagged the decisive goal in France's 2-1 World Cup warm-up win over Costa Rica on Wednesday.

The 1998 world champions and 2006 beaten finalists enjoyed large chunks of possession but sterile finishing cost them dear until Valbuena produced the late winner.

Coach Raymond Domenech elected to start Arsenal central defender William Gallas and Chelsea striker Nicolas Anelka, at the expense of Thierry Henry, with Steve Mandanda replacing number one keeper Hugo Lloris in goal.

Franck Ribery, suspended for his club Bayern Munich's Champions League final defeat to Inter Milan last weekend, also figured in Domenech's starting XI.

Domenech, who steps down after a roller-coaster spell as manager of France after the World Cup, was booed by some sections of the fans when his name was announced before kick-off in his last game in charge of Les Bleus on French soil.

Costa Rica, who missed out on a trip to South Africa when losing their two-leg play-off against Uruguay 2-1 last November, went into a surprise 12th minute lead.

The Central Americans had their more illustrious hosts on the back foot when midfielder Carlos Hernandez let fly from 25 metres, his shot bouncing over Mandanda's outstretched hands.

France, who thought they had equalised four minutes later only for Yoann Gourcuff's tap in to be ruled offside, did deservedly draw back level in the 23rd minute when Jeremy Toulalan set up Ribery whose shot from the left hand side of the box was deflected for an own goal by Douglas Sequeira past keeper Keylor Navas.

Mandanda may have been caught napping for Costa Rica's opener but he made amends when later tipping a goalbound shot from Bryan Ruiz, who plays his club football with Dutch champions FC Twente, over the bar.

After watching Ribery rise unscathed Domenech then replaced Sydney Govou with Marseille winger Valbuena, and he had the Costa Rican defence in a panic with his very first touch of the ball.

The pocket-sized player then ensured he would remember his first run out for his country for years to come when he bagged France's winner, a right footed hammer blow after being set up by late substitute Abou Diaby, with seven minutes left.

France's remaining warm-up fixtures before the World Cup are an away date against Tunisia on May 30 and against China in Reunion on June 4.

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