Led by prolific Bayern Munich striker Robert Lewandowski, Poland was the top scoring team in qualifying for the European Championship with a remarkable 33 goals in 10 games.At Euro 2016, that firepower has completely fizzled out. Instead, it's Poland's tight defense that has helped the team into the knockout stage of a European Championship for the first time, keeping three clean sheets in as many games.Switzerland will also be making its maiden appearance in the knockout round at a European Championship, with a team boasting the same defensive qualities as Poland.