MLB power rankings: First-place Giants face daunting week with series vs. Dodgers and Astros

Maintaining the top spot in this week's MLB power rankings, the San Francisco Giants have a two-game lead over the Los Angeles Dodgers in the NL West entering Monday, a huge week for the team with home series against the Dodgers and AL West-leading Houston Astros.

The Giants took three of four from the Dodgers on the road last week, but the Dodgers hold a 7-6 advantage in the season series. After hosting their division rivals, the Giants face off with the Astros, who enter Monday tied for the AL's best record with a 5 ½-lead over the Oakland Athletics.

The next seven days may very well determine the trajectory of the NL West race heading into August.

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