Pittsburgh Pirates at Seattle Mariners, MLB forecast
Win probability
Starts from the pregame forecast, then moves with the score and the time left after each inning. Above the line favors SEA.
Game center
From the ESPN box score.
Top performers
Pirates- Nick GonzalesBatting3-4
- Bailey FalterPitching5.2 IP, 3 ER, 4 K
Mariners- Cal RaleighBatting2-4, 2 HR, 3 RBI
- Bryan WooPitching6.0 IP, 0 ER, 8 K
Scoring summary
- 7Moore homered to left center (388 feet), Solano scored.0–6
- 6Raleigh homered to left center (381 feet).0–4
- 4Arozarena homered to right (344 feet).0–3
- 1Raleigh homered to left (440 feet), Rodríguez scored.0–2
The pick
Reconstructed from what was known before the game: the ratings at that point and the closing line.
Mariners 62%
Forecast Elo ratings alone
How often that comes true: MLB favorites the forecast gave 60–65% have won 61.6% of 1,194 graded games.
- Market
- SEA 62%
- ML PIT +150 / SEA -180
- Pre-line forecast
- SEA 63%
- Elo + market-implied
- Elo ratings
- SEA 58%
- Ratings vs. market
- −3.8 pts
- SEA: Elo 57.9%, market 61.6%
- Fair odds
- SEA -161
- PIT +161 · the forecast as odds, no margin
- Pregame projection
- PIT 3.2 – 4.3 SEA
- Margin from the forecast, posted total 7.5
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 | PIT | SEA | Why |
|---|---|---|---|
| Team rating | 1481 | 1513 | Elo entering the game; 1500 is league average |
| Home field | — | +18 | Worth 18 Elo in MLB |
| Starting pitchers | +6 | +12 | PIT: Bailey Falter: team allows 0.30 fewer runs than with its usual starter (≈10 weighted starts) · SEA: Bryan Woo: team allows 0.60 fewer runs than with its usual starter (≈10 weighted starts) |
| Elo ratings | SEA +55 Elo | SEA 57.9% | |
| Market-implied ratings | SEA 63.6% | Team strength as past closing lines priced it, same game context | |
| Pre-line forecast | SEA 62.7% | 15% Elo, 85% market-implied (log-odds blend) | |
| Forecast | SEA 61.6% | Follows the market (vig removed): in testing, adding the ratings made it less accurate | |
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. Opponent Elo: how strong the teams each has played are, 1st the toughest.
| PIT | Stat | SEA |
|---|---|---|
| 28th of 303.5 | Runs scored | 4.513th of 30 |
| 5th of 303.9 | Runs allowed | 4.419th of 30 |
| 21st of 30−0.3 | Margin | +0.215th of 30 |
| 3rd of 308–2 | Last 10 | 5–511th of 30 |
| 28th of 3012–29 | Road vs home | 22–2120th of 30 |
| 2nd of 301515 | Opponent Elo | 149426th of 30 |
| 24th of 301481 | Elo rating | 151313th 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.
Against the line
How each team has done against the closing spread and total, coming into this game.
| This season |  PIT |  SEA |
|---|---|---|
| Run line | 43–45 | 37–50 |
| Last 10 | 7–3 | 4–6 |
| Favorite | 8–19 | 15–37 |
| Underdog | 35–26 | 22–13 |
| Overs–unders | 37–51 | 49–38 |
| Overs–unders, last 10 | 6–4 | 6–4 |
Against each game's closing line. Books set every line knowing these records: across 3,901 past games, the team with the better record against the spread so far that season covered 51.2%, short of the 52.4% a standard −110 bet needs, and over/under streaks held 48.0% of the time. They describe the past.
Head to head
PIT 3–3 SEA in their last 6 meetings; the forecast called 4 of 6.