ARI @ COL MLB prediction: AI analysis & picks
Our picks for this match
Our Expert Analysis
PROView full analysis
PROBABLE STARTERS
GAME CONTEXT
Arizona (83-74) rolls into Coors Field with momentum after a 7-2 win on September 22. Colorado (57-100) hosts in the final stretch of a tough season. The Diamondbacks have controlled this recent H2H matchup, going 3-2 over their last five meetings including a 9-0 and a 7-2 blowout.
KEY ABSENCES
GAME SCRIPT
Both right-handers take the mound with xERAs north of 5.50, pointing to shaky command on either side. Adams posted his worst recent outing on September 16 — 4.1 IP, 6 ER, 8 H, 1 K on 84 pitches — marking the third time in his last five starts he failed to complete five innings. Kelly has also been unable to get through five innings in his last two starts. Coors Field's park factor of 1.32 makes a quick hook likely for both starters, pushing this game into the bullpens early — a decisive edge for Arizona, whose pen carries a 14-day ERA of 2.12 compared to Colorado's 4.66. The light north wind at 8 km/h (5 mph) and overcast sky slightly moderate the altitude effect without eliminating it.
OUR ANALYSIS
The AI model leans on Colorado to cover the +1.5 run line, banking on the Rockies staying within striking distance in a high-scoring environment. A park factor of 1.32 partially levels the quality gap between the two rotations — even a struggling starter like Adams can benefit from crooked numbers put up by his offense. Colorado posts a .321 wOBA against opposing starters, and Kelly's xERA of 6.47 paired with consecutive sub-five-inning outings gives the Colorado lineup genuine run-scoring opportunities. In a run-heavy setting at Coors, losing by one run remains a realistic outcome even for a 57-win club.
The biggest threat to this ticket is Colorado's bullpen (14-day ERA: 4.66). If Adams exits in the third or fourth inning trailing by a comfortable margin, Arizona's dominant relief corps (2.12 ERA over the last 14 days) is fully capable of slamming the door and extending the lead. Yesterday's 7-2 final followed exactly that blueprint. That's the primary risk here — one we accept given the park factor and the 1.900 line on a 59% confidence lean.
An AI lean on Colorado +1.5 at Coors Field: two shaky starters, a run-amplifying ballpark, and a fair price at 1.900. Moderate confidence — size your bet accordingly.
Key Factors
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Head-to-Head
Form & Stats
Team Comparison
4 of 39 model features (last 5-10 games)
ARI
STAT
COL
| Date | Game | Score |
|---|---|---|
| 09/22 | @ COL | 7-2 |
| 09/20 | vs NYY | 8-4 |
| 09/19 | vs NYY | 5-3 |
| 09/18 | vs NYY | 2-9 |
| 09/16 | vs MIA | 3-4 |
| Date | Game | Score |
|---|---|---|
| 09/22 | vs ARI | 2-7 |
| 09/20 | vs SEA | 1-2 |
| 09/19 | vs SEA | 5-3 |
| 09/18 | vs SEA | 4-5 |
| 09/17 | vs SDP | 2-9 |
| Pitcher | Starts | F5 vs Line | F5 Over% | F5 Signal | FT vs Line | FT Over% | FT Signal |
|---|---|---|---|---|---|---|---|
| Merrill Kelly (AWAY) | 16 | -0.16 | 50.0% | - | 0.00 | 50.0% | - |
| Date | vs | IP | ER | H | BB | K | ERA |
|---|---|---|---|---|---|---|---|
| 09/23 | COL | 5.33 | 2 | 4 | 1 | 2 | 3.38 |
| 09/16 | MIA | 4.67 | 3 | 7 | 2 | 9 | 5.78 |
| 09/11 | TEX | 4.33 | 1 | 2 | 3 | 3 | 2.08 |
| 09/04 | HOU | 6.00 | 3 | 7 | 0 | 4 | 4.50 |
| 08/29 | SFG | 7.00 | 0 | 2 | 4 | 7 | 0.00 |
| Date | vs | IP | ER | H | BB | K | ERA |
|---|---|---|---|---|---|---|---|
| 09/23 | ARI | 6.00 | 0 | 5 | 0 | 8 | 0.00 |
| 09/16 | SDP | 4.33 | 6 | 8 | 3 | 1 | 12.47 |
| 09/11 | DET | 5.00 | 1 | 2 | 3 | 5 | 1.80 |
| 09/05 | STL | 4.67 | 3 | 8 | 1 | 7 | 5.78 |
| 08/30 | ATL | 5.00 | 2 | 5 | 2 | 5 | 3.60 |
Frequently asked questions
When was ARI @ COL played?
This MLB game was played on 2026-09-23.
Where can I find the prediction for ARI @ COL?
This ProbWin page shows the predictions our model published before the game (F5 and full-game totals, spreads), the key stats for both sides, and the settled result — every prediction is kept, win or lose, in our public track record.
How are these predictions calculated?
Our MLB statistical models are trained on league history and recomputed daily from team and player stats plus market odds. Every prediction is published before the game and its result is settled publicly.
