The Washington Nationals have taken the first three games of a four-game series in Houston, each by one run. Can the Nats complete the sweep Thursday, or can the Astros salvage one game? And who do we like for a cash play?

Nats-'Stros – The Rundown

Washington won the opener of this series Monday 5-4 in 11 innings; the Nationals then won Tuesday 3-2 in 12 innings; then Wednesday they won 4-3. 

The Nationals now lead the season series with Houston six games to one.

The Nats have won five games in a row; the Astros, on the other hand, are 2-20 over their last 22 games. 

So Washington, at a ML-best 68-43, owns a four-game lead over Atlanta in the NL East, and it's two games up on NL Central-leading Cincinnati in the battle for the best record in the National League. 

Houston, meanwhile, at 36-76, is trying to avoid ending up with the worst record in the Majors for the second straight season. 

Thursday's Pitching Matchup

Jordan ZimmermanJordan Zimmerman (8-6, 2.45) gets the start in Thursday's series finale for Washington against Lucas Harrell (9-7, 3.98) for Houston.

Zimmerman ranks among the best in baseball with 17 quality starts out of 22 tries. His last time out he gave up four runs on seven hits in five innings vs. Miami, which broke a string of 11 straight quality outings. During the month of July Big Z allowed just four ER through 37 innings, walked four and struck out 31. We're left wondering how the hell this guy only has eight victories to his credit. 

In his one start this year against the Astros back in April Zimmerman got a win, giving up just one run on four hits through seven innings of a 3-2 Nationals victory. 

Harrell, meanwhile, is 9-for-22 on quality starts this season, and three for his last four. His last time out he held the Braves to two runs through six innings, although he did walk five. And over his last five outings he's allowed seven ER through 30 2/3 innings, although he's walked 16 guys over that span. 

In his one start this year against Washington Harrell gave up one run on four hits through 6 2/3 innings in that same game Zimmerman threw back in April. 

The Nats are 14-8 in Zimmerman's starts this year, while the Astros are 9-13 in Harrell's starts. Also, during Houston's current 2-20 slide Harrell owns both those wins. 

Thursday's Betting Odds and Trends

As of Thursday morning the best price we could find on Washington was the -162 offered at Matchbook, while Houston could be gotten at +160 at a couple of different baseball betting outlets

The Nationals could also be played at +110 on the run line at Matchbook. 

And most online sportsbooks are listing the total on Thursday's game at 7.5.

In early betting on Thursday's game almost 70 percent of play on the side has come down, not surprisingly, on Washington, while about 55 percent of MLB picks on the total has come in on the 'under.'

Free MLB Pick

Washington with our man Zimmerman is the obvious pick here. And being the gamblers that we are we'll take the Nats giving the run and a half on the run line.