It has been several years since we've had a good division race in the National League West. The Los Angeles Dodgers have won five straight division titles and weren't really threatened in any of those seasons. They held first place every day in September and October all five years.
Oh, the 2014 race was pretty close for part of September. The Dodgers entered the final month up two games over the San Francisco Giants, and it was down to one game with 15 to go, but then the Dodgers pulled away and won the division by six games.