Arizona Diamondbacks at San Francisco Giants, 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 SF.
Game center
From the ESPN box score.
Top performers
- Corbin CarrollBatting1-3
- Brandon PfaadtPitching7.0 IP, 1 ER, 7 K
- LaMonte Wade Jr.Batting1-3, 1 HR, 1 RBI
- Tristan BeckPitching4.0 IP, 0 ER, 3 K
Scoring summary
- 4
Wade Jr. homered to right center (396 feet).0–1 - 4
Pitch 5 : Ball In Play0–1 - 4
Pitch 4 : Strike 2 Looking0–0 - 4
Pitch 3 : Ball 20–0 - 4
Pitch 2 : Ball 10–0 - 4
Pitch 1 : Strike 1 Looking0–0
The pick
Reconstructed from what was known before the game: the ratings at that point.
Giants 53%
Forecast Elo ratings alone
How often that comes true: MLB favorites the forecast gave 50–55% have won 52.7% of 2,871 graded games.
- Market
- No line yet
- Pre-line forecast
- SF 53%
- Elo + market-implied
- Elo ratings
- SF 54%
- Fair odds
- SF -115
- ARI +115 · the forecast as odds, no margin
- Pregame projection
- ARI 3.9 – 4.2 SF
- 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 | ARI | SF | Why |
|---|---|---|---|
| Team rating | 1498 | 1510 | Elo entering the game; 1500 is league average |
| Home field | — | +18 | Worth 18 Elo in MLB |
| Starting pitchers | +1 | −1 | ARI: Brandon Pfaadt: team allows 0.03 fewer runs than with its usual starter (≈6 weighted starts) · SF: Scott Alexander: team allows 0.03 more runs than with its usual starter (≈3 weighted starts) |
| Elo ratings | SF +28 Elo | SF 54.0% | |
| Market-implied ratings | SF 53.3% | Team strength as past closing lines priced it, same game context | |
| Pre-line forecast | SF 53.4% | 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.
| ARI | Stat | |
|---|---|---|
| 10th of 304.8 | Runs scored | 4.516th of 30 |
| 23rd of 304.9 | Runs allowed | 4.29th of 30 |
| 18th of 300.0 | Margin | +0.213th of 30 |
| 26th of 303–7 | Last 10 | 6–44th of 30 |
| 6th of 3029–24 | Road vs home | 32–248th 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
ARI 5–5 SF in their last 10 meetings; the forecast called 7 of 10.



