August 12, 2012; San Francisco, CA, USA; San Francisco Giants outfielder Hunter Pence (8) stands in the on deck circle against the Colorado Rockies in the fifth inning at AT&T Park. The Giants defeated the Rockies 9-6. Mandatory Credit: Cary Edmondson-US PRESSWIRE
For more on the Giants head to McCovey Chronicles.
The San Francisco Giants are hanging on by a thread atop the NL West, while the Washington Nationals are sitting pretty in the NL East at the moment. But both first-place squads clash at AT&T Park for a three game set to start the week.
With just a one game lead over the Los Angeles Dodgers, San Francisco needs to keep winning series if they want to stay ahead. This is Washington's first trip to the Bay this year, though wre swept by the Nats in D.C. earlier this year. Hopefully they can return the favor this time around.
For more on the Giants head over to McCovey Chronicles.