May 27, 2025; Chicago, Illinois, USA; Colorado Rockies starting pitcher German Marquez (48) pitches during the first inning against the Chicago Cubs at Wrigley Field. Mandatory Credit: Patrick Gorski-Imagn Images

Colorado Rockies vs Washington Nationals Prediction 06/18/2025 Picks

Pick details

Colorado (16-57) vs Washington (30-43)

June 18, 2025 at 06:45 PM EDT

The Line: Betting Odds: Washington 0.0001 — Over/Under: 0.0001

(Get latest betting odds)

In this article, we will formulate a Rockies vs Nationals prediction for this MLB game on Wednesday, June 18, at Nationals Park in Washington, District of Columbia. Let’s take a look at the prediction for this MLB matchup.

Colorado Rockies Betting Preview

The Colorado Rockies (16-57, 9-30 Away) won three consecutive games for the second time this season after defeating the Washington Nationals in the opening two games of this four-game series. Prior to it, the Rox avoided getting swept at the hands of the Braves with a win in Game 3. In Tuesday’s 10-6 win over the Nats, the Rockies scored four home runs in the 6th inning and tied a franchise record of seven homers. Hunter Goodman and Michael Toglia led the offense with three RBI apiece, while Antonio Senzatela got the win after allowing one run (not earned) on three hits with no strikeouts and three walks in 5.0 innings.

This season, the Rockies average 3.40 runs per game (28th in the MLB) on a .225/.289/.372 triple-slash. When it comes to pitching, the Rockies’ staff has a 5.60 ERA (30th) and 1.57 WHIP (30th). Hunter Goodman leads the Rockies with a .285 batting average, 14 home runs, and 46 RBI this season.

German Marquez will take the mound for the Rockies on Wednesday. The 30-year-old right-hander has a 2-8 record in 14 starts this year with a 6.62 ERA and 1.66 WHIP in 68.0 innings.

Washington Nationals Betting Preview

The Washington Nationals (30-43, 15-23 Home) are playing their worst baseball of the season and are on a ten-game losing streak right now. Washington lost four straight series to the Cubs and Rangers, and was swept by the Mets and Marlins. They will certainly not win the current one against the Rockies after dropping the opening two games. In last night’s 10-6 defeat, Luis Garcia Jr. led the team with two RBI, while Mike Soroka took the loss after allowing three runs on five hits with nine strikeouts and two walks in 6.0 innings.

This year, the Nationals average 4.15 runs per game (19th in the MLB) on a .238/.306/.381 triple-slash. When it comes to pitching, the Nationals’ staff has a 4.92 ERA (27th) and 1.38 WHIP (24th). James Wood leads the Nationals with a .281 batting average, 18 home runs, and 51 RBI this season.

The projected starting pitcher for the Nationals is Mitchell Parker, who is 4-7 in 14 starts this season, with a 4.84 ERA and 1.35 WHIP in 74.1 innings.

Why the Colorado Rockies will win

The Nationals have lost each of their last seven games as home favorites.
The underdogs have won each of the last four games between the Rockies and Nationals.
The Nationals have failed to cover the run line in each of their last eight games as home favorites after playing the previous day.
The Rockies have covered the run line in 12 of their last 13 road games against NL East opponents following a road win.
The Nationals have trailed after 5 innings in 11 of their last 14 games at Nationals Park against NL West opponents that held a losing record.
The Nationals have trailed after 3 innings in three of their last four night games.

Total Runs Facts

Each of the Rockies’ last four night games after playing the previous day have gone OVER the total runs line.
Twelve of the Nationals’ last 15 home games after playing the previous day have gone UNDER the total runs line.
The ‘Inning 1 OVER 0.5 runs’ market has hit in nine of the Nationals’ last 10 night games against National League opponents.
The ‘Inning 1 OVER 0.5 runs’ market has hit in each of the Rockies’ last five night games against National League opponents.

Matchup/League Facts

The Nationals rank 27th in the league for runs allowed this season (374).
The Nationals rank 26th in the league for hits allowed this season (647).
The Rockies rank 30th in the league for ERA this season (5.59).
The Rockies rank 30th in the league for strikeouts this season (489).

Rockies vs Nationals Prediction

The teams have traded victories in the past couple of years, each recording five in the previous ten H2H encounters. Colorado was better in three of five meetings this season, and is currently on a three-game winning run. I am not confident enough to back the Rockies to win again on Wednesday, but I am backing them to stay close and cover the run line. Washington is struggling right now, and the Rox have a chance to perhaps sweep this four-game series. German Marquez had problems early in the season, but it seems he is stable now, as he has allowed more than three runs only once in his last five starts. Mitchell Spence, on the other hand, had a disastrous May, during which he registered a 7.94 ERA. His struggles continued in June, so I am sure the in-form Rockies will score multiple runs off him early on. Back the visitors to cover.

Oliver Zivic's Pick: Rockies +1.5

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