Colorado Rockies vs Arizona Diamondbacks Prediction 8/9/2025 Today’s MLB Picks

In this article, we will formulate a Rockies vs Diamondbacks prediction for this MLB game on Saturday, August 9, at Chase Field in Phoenix, Arizona. Let’s take a look at the prediction for this MLB matchup.

Colorado Rockies Betting Preview

The Colorado Rockies (30-85, 14-43 Away) are experiencing their worst stretch of the second half after suffering five consecutive defeats. Colorado was swept by the Toronto Blue Jays at home and allowed 45 runs in three games! The Rockies opened the current series against the Diamondbacks with a 6-1 defeat on Friday. Kyle Karros drove in the lone RBI for the offense in his first-ever at-bat in the MLB, while Austin Gomber took the loss after allowing six runs on five hits with three strikeouts and three walks in 6.0 innings.

This season, the Rockies average 3.72 runs per game (28th in the MLB) on a .236/.295/.392 triple-slash. When it comes to pitching, the Rockies’ staff has a 6.01 ERA (30th) and 1.62 WHIP (30th). Hunter Goodman leads the Rockies with a .282 batting average, 22 home runs, and 64 RBI this season.

Bradley Blalock will take the mound for the Rockies on Saturday. The 24-year-old right-hander has a 1-3 record in seven starts this year with a 7.68 ERA and 1.66 WHIP in 38.2 innings.

Arizona Diamondbacks Betting Preview

The Arizona Diamondbacks (55-61, 28-30 Home) went through a rough period of the season, during which they lost six consecutive games, but responded with three wins in a row. Two of those came against the Athletics and one against the Padres. Still, the D-backs lost that series to San Diego, but opened this one against the Rox with a 6-1 victory. Blaze Alexander led the offense with four RBI, while Zac Gallen got the win after allowing one run on four hits with six strikeouts and three walks across 6.0 innings of work.

This year, the Diamondbacks average 4.83 runs per game (7th in the MLB) on a .248/.324/.436 triple-slash. When it comes to pitching, the Diamondbacks’ staff has a 4.57 ERA (26th) and 1.34 WHIP (24th). Geraldo Perdomo leads the Diamondbacks with a .279 batting average, 11 home runs, and 75 RBI this season.

The projected starting pitcher for the Diamondbacks is Eduardo Rodriguez, who is 4-7 in 19 starts this season, with a 5.53 ERA and 1.66 WHIP in 97.2 innings.

Total Runs Facts

• Eight of the Rockies’ last nine road games against National League opponents have gone UNDER the total runs line.
• Seven of the Diamondbacks’ last eight games against National League opponents have gone UNDER the total runs line.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in each of the Rockies’ last nine games as underdogs.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in each of the Diamondbacks’ last six home games against National League opponents.

Matchup/League Facts

• The Diamondbacks rank 4th in the league for walks this season (406).
• The Diamondbacks rank 6th in the league for doubles this season (199).
• The Rockies rank 30th in the league for ERA this season (6.01).
• The Rockies rank 30th in the league for strikeouts this season (751).

Rockies vs Diamondbacks Prediction

The Diamondbacks won six of the previous ten H2H encounters, including four of the last five, while this season, Arizona leads 5-2. I am going with Over in this one because the Rockies cannot keep the opponents off the scoreboard. The worst defense in the MLB is falling apart, and I don’t think that will change on Saturday with Bradley Blalock on the mound. After having three strong starts in a row, Blalock was destroyed by the Pirates in his most recent start. I am backing the D-backs to score 5+ runs against him. Eduardo Rodriguez, on the other hand, is Arizona’s weakest starter this season, and he registered a bloated 7.40 ERA in July. The Rockies will have a chance to get things going offensively against him. Go with Over.