WARSAW (AP) Serbia used a stingy defense to upset world champion Spain 66-57 Monday on the opening day of the FIBA Europe Championship.

Looking like one of the formidable Yugoslav teams of old, the young Serbian squad without any NBA stars thoroughly outplayed a lackluster Spain, clamping down on a Spanish attack led by Los Angeles Lakers center Pau Gasol.

"I think tonight my team absolutely deserved this victory," Serbia coach Duzan Ivkovic said. "We won with extremely great defense."