'His team had a strong defensive effort, killing off seven straight Buffalo power plays (including a 5-on-3 in the second period) until Woolley's disputed goal. Forwards backchecked, defensemen cleared the slot in front of Hnilicka, allowing him to see the puck, and the Czech goalie allowed few rebounds. The team also employed its version of the "left wing lock," in which one forechecker forces play to one side of the ice, making it easier for four forwards to clog the neutral zone.'