Baník, without injured Czech international Marek Heinz, began confidently and went ahead through Miroslav Matušovic's 19th-minute penalty, but second-half goals from Radek Divecký and Pavel Veleba earned Teplice the points, to the fury of coach František Komnacký.
"It was a disgrace, unworthy of champions," Komnacký said. "We played badly in the first half and it was total bewilderment after the interval. The players did not fight at all."
Baník's title rivals fared little better, with UEFA Champions League hopefuls AC Sparta Praha being held to a 1-1 draw by 1. FC Synot. Petr Pavlík gave Synot the lead, before defender Jirí Homola's header salvaged a point for the home side.
SK Slavia Praha lost at FC Zlín, who despite being depleted by illness, won through a Roman Dobeš strike, while UEFA Cup contenders SK Sigma Olomouc had to come from behind to defeat visitors SK Dynamo Ceské Budéjovice 2-1, Radim Kucera and Ales Bednár cancelling out Jan Gruber's opener. FK Marila Príbram beat SFC Opava by the same scoreline.
David Rojka was the hero for FK Mladá Boleslav, his goal ensuring a home victory for the newly promoted club against FK Jablonec 97 in the first top-flight match in their 102-year history. Mladá Boleslav also had Radek Cízek to thank after the Jablonec midfield player missed a penalty.
The other new boys, 1. FK Drnovice, were not so lucky, losing 1-0 to Karel Kroupa's goal for 1. FC Brno. FC Slovan Liberec's game against FK Chmel Blšany was postponed due to Liberec's UEFA Intertoto Cup commitments.
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