Colorado Rockies vs Arizona Diamondbacks Prediction 5/18/25 MLB Picks

The Colorado Rockies are visiting the Arizona Diamondbacks on Sunday, May 18th at the Chase Field in the third game of this series, with both teams being tied 1-1 wins. We will look at this from a betting perspective and determine the best bets for this game. Here’s a Colorado Rockies vs Arizona Diamondbacks Prediction. We will examine:

The Arizona Diamondbacks’ recent form and player performance

The Colorado Rockies’ recent form and player performance

Recent betting trends and streaks involving the Arizona Diamondbacks

Recent betting trends and streaks involving the Colorado Rockies

Recent betting trends in games played between the Colorado Rockies and the Arizona Diamondbacks

A summary that ties it all together and produces a favorable betting outcome for the Colorado Rockies vs Arizona Diamondbacks game

Arizona Diamondbacks Preview

The Arizona Diamondbacks have a 24-22 record this season and are sitting in 4th place in the NL West. The Diamondbacks have a 12-13 home record and are 20-22 in over/under. They are coming off a 12-14 home defeat by the Rockies, which snapped their previous two-game winning streak. Over is 3-1 in their last 4 games, and they are playing the Dodgers and the Cardinals next.

The Diamondbacks have a .257 batting average this season, a .338 OBP, and a .452 slugging percentage. Arizona’s pitching staff has a 4.81 ERA and 1.36 WHIP. Corbin Carroll leads the Diamondbacks with 55 hits, while Josh Naylor is the team’s best hitter with a .308 batting average. Eugenio Suarez leads the team in RBI, with 37 and a team-high 14 home runs.

Merrill Kelly (R) will take the mound for the Diamondbacks, and he has a 4-2 record, 3.71 ERA, and 1.06 WHIP. He has been better at home, with a 3.04 ERA across 4 home starts. He is coming off a quality start against the Giants, with one earned run in 7 innings pitched. Merrill Kelly has a record of 7-3 with an ERA of 3.51 and 84 strikeouts in 15 appearances versus the Rockies in his career.

Colorado Rockies Preview

The Colorado Rockies have an 8-37 record this season and are sitting in last place in the NL West. The Rockies have a 3-21 road record and are 19-25 in over/under. They are coming off a 14-12 road victory over the Diamondbacks, ending their previous four-game losing streak. Over is 7-3 in their last 10 games, and they are playing the Phillies and the Yankees next.

The Rockies have a .220 batting average this season, a .288 OBP, and a .365 Slugging percentage. Colorado’s pitching staff has a 5.90 ERA and 1.61 WHIP.  Hunter Goodman leads the Rockies with 48 hits, adding a team-high 29 RBI, and he is the team’s best hitter with a .300 batting average. Jordan Beck adds a team-high 8 home runs.

Chase Dollander (R) will take the mound for the Rockies, and he has a 2-4 record, 6.88 ERA, and 1.47 WHIP. He has been better on the road with a 4.96 ERA in his three road starts. He has 2 or fewer earned runs in two of his last three starts, and this will be his first career start against the Diamondbacks.       

Why the Arizona Diamondbacks will win

• The Rockies have lost each of their last 15 day games following a win.
• The Diamondbacks have won each of their last 12 day games against National League opponents following a home loss.
• The Rockies have failed to cover the run line in each of their last nine day games against the Diamondbacks at Chase Field following a win.
• The Diamondbacks have covered the run line in each of their last eight day games against the Rockies at Chase Field following a loss.
• The Diamondbacks have led after 3 innings in each of their last seven day games against the Rockies.
• The Diamondbacks have won the first inning in each of their last four day games against NL West opponents that held a losing record.
• The Rockies have trailed after 5 innings in 14 of their last 15 road games against opponents that held a winning record.

Why the Colorado Rockies will win

• The Diamondbacks have lost six of their last eight games as home favorites after playing the previous day.
• The Diamondbacks have failed to cover the run line in each of their last five games after playing the previous day.
• The underdogs have covered the run line in four of the Diamondbacks’ last five games.

Total Runs Facts

• Each of the Rockies’ last five day games after playing the previous day have gone OVER the total runs line.
• Ten of the Diamondbacks’ last 12 day games against NL West opponents have gone OVER the total runs line.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in each of the last five day games between the Rockies and Diamondbacks.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in five of the Rockies’ last six games as underdogs against NL West opponents.

Matchup/League Facts

• The Diamondbacks rank 1st in the league for doubles this season (98).
• The Diamondbacks rank 3rd in the league for slugging percentage this season (.452).
• The Rockies rank 1st in the league for triples this season (13).
• The Rockies rank 30th in the league for strikeouts against this season (439).

Colorado Rockies vs Arizona Diamondbacks Prediction

The Dbacks are 7-3 in their last 10 overall meetings against the Rockies, and are 7-2 in their 9 meetings in Arizona. Under is 6-3-1 in their last 10 meetings.

In this Colorado Rockies vs Arizona Diamondbacks Prediction, the Diamondbacks are coming as huge -350 home favorites. The Diamondbacks are rightfully favored, as they have been the superior team this season, and are in a bounce-back spot today after yesterday’s 12-14 loss. Arizona has the pitching advantage, the better bullpen, and is hitting much better than the Rockies (.258 to .220). Expect the Rockies to go back to their losing ways after a rare win, so take the Arizona Diamondbacks on the runline in this one.

Nikos Lagouretos's Pick: Arizona Diamondbacks -1.5