Colorado Rockies at Arizona Diamondbacks, MLB forecast
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Win probability
Starts from the pregame forecast, then moves with the score and the time left after each inning. Above the line favors ARI.
Game center
From the ESPN box score.
Top performers
Rockies- Elias DiazBatting2-4, 1 RBI
- Peter LambertPitching6.0 IP, 4 ER, 5 K
Diamondbacks- Jace PetersonBatting1-3, 2 RBI
- Merrill KellyPitching7.0 IP, 1 ER, 12 K
Scoring summary
- 9Díaz doubled to left, Tovar scored.2–4
- 9Pitch 8 : Ball In Play2–4
- 9Pitch 7 : Ball 31–4
- 9Pitch 6 : Strike 2 Foul1–4
- 9Pitch 5 : Strike 2 Foul1–4
- 9Pitch 4 : Strike 2 Swinging1–4
- 9Pitch 3 : Ball 21–4
- 9Pitch 2 : Ball 11–4
- 9Pitch 1 : Strike 1 Swinging1–4
- 5Goodman singled to left, Jones scored, Rodgers thrown out at third.1–4
- 5Pitch 1 : Ball In Play1–4
- 4Peterson doubled to right, Gurriel Jr. scored and Moreno scored.0–4
- 4Pitch 1 : Ball In Play0–4
- 4Moreno singled to center, Walker scored, Gurriel Jr. to third.0–2
- 4Pitch 6 : Ball In Play0–2
- 4Pitch 5 : Strike 2 Foul0–1
- 4Pitch 4 : Strike 2 Foul0–1
- 4Pitch 3 : Strike 2 Foul0–1
- 4Pitch 2 : Ball 10–1
- 4Pitch 1 : Strike 1 Looking0–1
- 3Carroll tripled to right, Perdomo scored.0–1
- 3Pitch 3 : Ball In Play0–1
- 3Pitch 2 : Ball 10–0
- 3Pitch 1 : Strike 1 Foul0–0
The pick
Reconstructed from what was known before the game: the ratings at that point.
Diamondbacks 57%
Forecast Elo ratings alone
How often that comes true: MLB favorites the forecast gave 55–60% have won 55.5% of 2,596 graded games.
- Market
- No line yet
- Pre-line forecast
- ARI 57%
- Elo + market-implied
- Elo ratings
- ARI 60%
- Fair odds
- ARI -131
- COL +131 · the forecast as odds, no margin
- Pregame projection
- COL 4.6 – 5.2 ARI
- Margin from the forecast, total from team scoring ratings
How the number is built
Elo inputs in rating points (higher favors that team; 25–28 Elo is about a point of spread in football and basketball), then how the pieces combine.
| Factor | COL | ARI | Why |
|---|---|---|---|
| Team rating | 1438 | 1495 | Elo entering the game; 1500 is league average |
| Home field | — | +18 | Worth 18 Elo in MLB |
| Starting pitchers | +11 | +8 | COL: Peter Lambert: team allows 0.56 fewer runs than with its usual starter (≈6 weighted starts) · ARI: Merrill Kelly: team allows 0.38 fewer runs than with its usual starter (≈9 weighted starts) |
| Elo ratings | ARI +71 Elo | ARI 60.1% | |
| Market-implied ratings | ARI 56.1% | Team strength as past closing lines priced it, same game context | |
| Pre-line forecast | ARI 56.7% | 15% Elo, 85% market-implied (log-odds blend) | |
Tale of the tape
This season coming into the game, regular season, each number with its league rank (the longer the bar, the higher). Home and road: the host's record at home against the visitor's on the road.
| COL | Stat | ARI |
|---|---|---|
| 18th of 304.4 | Runs scored | 4.713th of 30 |
| 30th of 305.9 | Runs allowed | 4.922nd of 30 |
| 29th of 30−1.5 | Margin | −0.218th of 30 |
| 29th of 302–8 | Last 10 | 4–618th of 30 |
| 28th of 3021–48 | Road vs home | 36–3417th of 30 |
Rating history
Each team's Elo over the last two seasons. Hover or drag to compare on any date.
Recent form
Last five results, and whether the forecast hit.
Head to head
COL 2–8 ARI in their last 10 meetings; the forecast called 6 of 10.