The San Francisco Giants goes head-to-head versus the Washington Nationals tonight at AT&T Park, San Francisco, California. The game will start at 9:00 pm ET and can be watched online through live stream via the link provided below (free for subscribers).

The Nationals (1-2) are hoping to avoid elimination (in addition to attempting to tie the series at 2-2) against the Giants when their veteran starter Gio Gonzalez (10-10, 3.57 ERA) takes the pitching mound this afternoon in Game 4 of the NLDS.

The Nationals previously defeated the Giants by a final score of 4-1 in Game 3, yesterday.

"[There's] definitely going to be some emotion," said Gonzalez to reporters, "There's going to be some excitement. In my career and my time playing, I definitely want to stay as much composed and relaxed as possible. Picking up from other pitchers, that's the beauty about being a pitcher on the side -- watching other people's emotions and the way they go about it, the way they compete, and just staying low-key and professional as much as possible."

Meanwhile, the Giants (2-1) starter Ryan Vogelsong (8-13, 4.00 ERA) will try to eliminate the Nationals tonight in order to advance to the National League Championship Series and face the winner of the Cardinals/Dodgers NLDS round.

"Even at the end of the season, I would be rolling along in the game and then just kind of lose it," said Vogelsong to reporters in reference to his performance struggles last month.

"So, I mean, it's there. I just need to be more focused at times and more concentrated on making a good pitch. Those will be the things that are on the forefront of my mind."

The game will starts at 9:00 pm ET and can be watched on TV on the FS1 network or online through live stream by clicking here.