The Colorado Rockies and the Arizona Diamondbacks meet Wednesday in MLB action from Chase Field. 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.
Starting Pitching Matchup
The Colorado Rockies will send out Ryan Feltner for the start here and Feltner is 4-6 with a 5.71 ERA and 59 strikeouts this season. Merrill Kelly will start for the Diamondbacks and is 8-9 with a 4.88 ERA and 80 strikeouts this season.
Colorado Rockies Recap
The Colorado Rockies come into this game looking to add on to their 3-2 win over Arizona last time out to improve to 47-73 this season. After this series, the Rockies will head on the road for a series against the Giants.
Rockies Split Last Four Games
Going into Tuesday, TJ Rumfield has 122 hits with 24 doubles, 2 triples, 13 home runs and 59 RBIs while Ezequiel Tovar has 75 hits with 19 doubles, 9 home runs and 37 RBIs. Hunter Goodman’s added 103 hits with 16 doubles, 34 home runs and 69 RBIs. Troy Johnston has 91 hits with 25 doubles, 3 home runs and 43 RBIs. Willi Castro also has 95 hits with 17 doubles, 13 home runs and 48 RBIs.
Arizona Diamondbacks Recap
The Arizona Diamondbacks come into this game looking to shake off their loss to Colorado last time out to sit at 64-57 on the year. After this series, the Diamondbacks will head on the road for a series against the Atlanta Braves.
Diamondbacks Have Two-Game Win Streak Snapped
Entering Tuesday, Corbin Carroll has 105 hits including 24 doubles, 13 triples, 16 home runs and 55 RBIs. Ketel Marte has 113 hits with 23 doubles, 3 triples, 20 home runs and 65 RBIs and Geraldo Perdomo has 101 hits, with 15 doubles, 6 triples, 9 home runs and 42 RBIs as well this season. Nolan Arenado also has 94 hits with 20 doubles, 16 home runs and 58 RBIs and Gabriel Moreno has 98 hits with 22 doubles, 8 home runs and 52 RBIs this season. Ildemaro Vargas also has 91 hits with 17 doubles, 4 triples, 7 home runs and 55 RBIs.
Colorado Rockies @ Arizona Diamondbacks Betting Trends: August 12, 2026
- Probable Starting Pitcher: Merrill Kelly Record this season: 8-9 ERA: 4.88
- Home Record: 4-3
- Last 5 against Rockies: 4-0
Why the Arizona Diamondbacks will win
- The Rockies have lost each of their last 11 games against National League opponents following a road win.
- The Diamondbacks have won each of their last 10 home games against the Rockies following a loss.
- The Diamondbacks have covered the run line in each of their last six games following a loss.
- The Rockies have failed to cover the run line in each of their last six games as underdogs following a win.
- The Rockies have lost the first inning in each of their last five day games at Chase Field.
- The Diamondbacks have led after 3 innings in each of their last seven day games against the Rockies at Chase Field.
- The Diamondbacks have led after 5 innings in each of their last seven day games against the Rockies at Chase Field.
- Probable Starting Pitcher: Ryan Feltner Record this season: 4-6 ERA: 5.71
- Road Record: 0-4
- Last 5 against Diamondbacks: 1-3
Why the Colorado Rockies will win
- The Diamondbacks have lost four of their last five Wednesday games as home favorites against National League opponents.
- The underdogs have covered the run line in four of the Diamondbacks’ last five games.
- The Diamondbacks have failed to cover the run line in eight of their last nine Wednesday games as favorites against National League opponents.
- The Diamondbacks have trailed after 5 innings in three of their last four day games against National League opponents that held a losing record.
- The Rockies have led after 3 innings in three of their last four day games against NL West opponents.
Total Runs Facts
- Five of the Diamondbacks’ last six games have gone UNDER the total runs line.
- Each of the Rockies’ last three day games against NL West opponents have gone UNDER the total runs line.
- There has been at least one run scored in the first inning in each of Merrill Kelly’s last six appearances as a starter against the Rockies.
- There has been at least one run scored in the first inning in each of the Rockies’ last six day games at Chase Field.
Arizona Diamondbacks Player Prop Facts
- Ketel Marte has hit a home run in three of the Diamondbacks’ last five home games against NL West opponents that held a losing record.
- Merrill Kelly has recorded a win in each of his last four appearances at Chase Field against NL West opponents that held a losing record.
- Merrill Kelly has recorded five or more strikeouts in eight of his last nine home appearances against NL West opponents that held a losing record.
- Corbin Carroll has recorded at least one hit in each of the Diamondbacks’ last 16 games against the Rockies.
- Gabriel Moreno ranks 7th amongst qualified players for Batting Average (.304) this season.
Colorado Rockies Player Prop Facts
- Kyle Karros has hit a home run in two of his last three appearances against NL West opponents that held a winning record.
- Ryan Feltner has recorded four or more strikeouts in 11 of his last 12 road appearances against opponents that held a winning record.
- Jordan Beck has recorded at least one hit in 10 of his last 11 appearances against the Diamondbacks after playing the previous day.
- Hunter Goodman ranks 5th in the league in Home Runs (34) this season.
Matchup/League Facts
- The Diamondbacks rank 1st in the league for triples this season (31).
- The Diamondbacks rank 30th in the league for strikeouts this season (821).
- The Rockies rank 1st in the league for doubles this season (219).
- The Rockies rank 30th in the league for opponent batting average this season (.288).
Colorado Rockies vs. Arizona Diamondbacks Prediction
I’m on Arizona in this one. I get the case to be made for either side in this game, but I’m not a fan of Ryan Feltner and his game right now and I think that the Diamondbacks get to him here. Merrill Kelly’s a better pitcher than what he’s shown for a lot of the season and Arizona is just playing the better baseball at this point. I think this is an Arizona spot so give me the Diamondbacks here.