Chicago Cubs (92-70) vs. Washington Nationals (97-65)
This is a series of "what ifs?" for both teams. What if Cubs left-hander Jon Lester isn't the clutch Jon Lester? What if Nationals ace Max Scherzer is really hampered and delayed by his mild hamstring strain? What if Cubs right-hander Jake Arrieta isn't the good Jake Arrieta? And maybe the most important "if" of all: What if Nationals outfielder Bryce Harper can't shake off the rust from missing 42 games with a bad knee bruise?
Well, even with all those "what ifs?," this is still going to be an entertaining and fun National League Division Series. Not much can be gleaned from the seven times the two clubs played during the regular season -- the Nationals won the season series, 4-3.