Jablonec moved to the top of the Gambrinus Liga courtesy of David Lafata's second-half winner against Liberec.
Jablonec claimed the lead through Petr Zabojnik after 16 minutes, but went in at half-time level after Milos Bosancic struck six minutes before the break.
Lafata then netted after 63 minutes to give his side a 2-1 win.
Sevinsky strikes for Plzen
In the day's other game, Frantisek Sevinsky netted in stoppage time to give Plzen a 2-1 win over Mlada Boleslav.
Marek Kulic had earlier cancelled out a ninth-minute penalty from Plzen's Pavel Horvath, but Mlada's plans were derailed by Tomas Fabian's 76th-minute red card.