Dodgers drop season series vs. D-backs. What does that mean for NL West race?

The Los Angeles Dodgers lost 4-2 to the Arizona Diamondbacks on Sunday, dropping the season series against their NL West rivals after losing six of their last seven matchups. Starter Justin Wrobleski struggled, allowing four runs in just 3 1/3 innings, contributing to the defeat. While the Dodgers still hold first place in the NL West with a 7.5-game lead, that advantage has shrunk significantly from a season-high 14 games just one month ago.