4. Nashville Predators: It's debatable which team gave the Blackhawks the toughest challenge in the playoffs last season, but the Predators would be in that discussion. The Predators had the Blackhawks on the ropes. The Blackhawks needed backup goaltender Scott Darling to stand on his head early in their first-round series and pulled out three one-goal victories -- two of which came in overtime -- to advance. The Predators are off to a strong start and again proving they can be dominant in the regular season. Now they have to prove they can finish what they start.