I don't know which year it was, perhaps 2010, when the Czechs lost to Sweden 1:10. That team was terrible. But it's hard to pick the worst Czech team between say 2008-2011. Some players made a successful careers later, like Ondřej Palát, Radko Gudas, Jakub Jeřábek and a few others, but the team as a whole was always terrible in these years. It started to change to better a little bit since 2012 (generation of Hertl, Jaškin, Mrázek ...), but really good bunch of individuals was that of 2015 (with Pastrňák, Vrána, Ondřej Kaše ...) and 2016 (Pastrňák, Vrána, Zacha ...). Unfortunately, they never worked well as a team, which was very much caused by terrible coaching (the coach Přerost was extraordinarily bad in communication with players, now he is just an assistant coach, and seems to be decent in this role). The Czech team playing now in Buffalo looks like the best since perhaps some 2006, I believe. Some very skilled individuals, and Pešán manages the coaching well thus far.