MLB has 4 matches on Saturday, September 12. Below is the full slate with bookmaker prices and the probabilities those prices imply once the margin is removed.
Fixtures and odds
| UTC | Match | Home | Away | Implied |
|---|---|---|---|---|
| 00:11 | Minnesota Twins vs Cleveland Guardians | 2.00 | 1.82 | 47.6% / 52.4% |
| 00:16 | St. Louis Cardinals vs Chicago White Sox | 1.91 | 1.88 | 49.6% / 50.4% |
| 01:40 | Athletics vs Seattle Mariners | 2.38 | 1.58 | 39.9% / 60.1% |
| 02:16 | San Francisco Giants vs San Diego Padres | 2.18 | 1.68 | 43.6% / 56.4% |
Odds are decimal, averaged across 18 books (BetOnline.ag, 888sport, Unibet (FR), Nordic Bet, MyBookie.ag, Betsson). "Implied" strips the bookmaker margin so the numbers add up to 100%.
Match by match
Minnesota Twins vs Cleveland Guardians
00:11 UTC · Target Field, Minneapolis · Season record: Minnesota Twins 69-77 / Cleveland Guardians 74-73
The market can barely separate them — 47.6% against 52.4%. Prices come from 18 books, and they differ by 10.6% on the widest side.
St. Louis Cardinals vs Chicago White Sox
00:16 UTC · Busch Stadium, St. Louis · Season record: St. Louis Cardinals 72-75 / Chicago White Sox 75-70
The market can barely separate them — 49.6% against 50.4%. Prices come from 13 books, and they differ by 8.8% on the widest side.
Athletics vs Seattle Mariners
01:40 UTC · Sutter Health Park, Sacramento · Season record: Athletics 59-88 / Seattle Mariners 69-78
The market leans Seattle Mariners at 60.1%. Prices come from 17 books, and they differ by 13.6% on the widest side.
San Francisco Giants vs San Diego Padres
02:16 UTC · Oracle Park, San Francisco · Season record: San Francisco Giants 62-85 / San Diego Padres 78-68
The market leans San Diego Padres at 56.4%. Prices come from 18 books, and they differ by 9.8% on the widest side.
What the market is saying
- Closest on paper — St. Louis Cardinals vs Chicago White Sox: 49.6% vs 50.4%.
- Most one-sided — Athletics vs Seattle Mariners: the market gives Seattle Mariners 60.1%.
- Where books disagree most — Athletics vs Seattle Mariners: 13.6% between the best and worst price.
- Average bookmaker margin — 5.3% across the slate.
Reading the slate
The Cardinals–White Sox matchup stands out as the day's tightest contest, with the market pricing these teams at nearly even odds. The implied probabilities sit at 49.6% for St. Louis and 50.4% for Chicago, making this the closest call on the slate. Despite drawing the fewest bookmakers of the four games at just 13, the 8.8 percentage point spread between high and low odds is moderate, suggesting genuine uncertainty rather than sharp disagreement.
Seattle's visit to Oakland presents the slate's most lopsided matchup, with the Mariners favored at 60.1% implied probability against the Athletics at 39.9%. This 20.2-point gap is significantly wider than any other fixture listed. The 13.6 percentage point spread across bookmakers is the largest on the day, indicating some material disagreement despite the general consensus favoring Seattle heavily.
The Twins–Guardians and Giants–Padres games both fall into similar territory, with away teams favored by roughly 4–5 points in the implied probabilities. Minnesota trails Cleveland at 47.6% to 52.4%, while San Francisco sits at 43.6% against San Diego's 56.4%. These games show relatively consistent pricing across bookmakers, with spreads between 10.6 and 9.8 percentage points, suggesting the market has settled on fairly stable views of both matchups.
Prices captured 2026-09-11 00:00 UTC. Odds move.