Seattle Mariners vs Cleveland Guardians Prediction
Expert prediction, odds analysis, and best bet for Seattle Mariners vs Cleveland Guardians on June 26, 2026.
Win Probability
Best Bet
Current Odds
API-Sports| Team | Moneyline | Run Line | Total | Impl. Prob. |
|---|---|---|---|---|
Seattle MarinersAway | -106 | -227 | -109 | 51% |
Cleveland GuardiansHome | -111 | +177 | -114 | 53% |
Additional Full-Game Markets
First 5 Innings (F5)
Statistical Analysis
- 1
Cleveland Guardians project 4.2 runs: 4.0 RF/G offense vs 4.0 RA/G Seattle Mariners pitching.
- 2
Seattle Mariners project 3.5 runs: 4.0 RF/G offense vs 4.0 RA/G Cleveland Guardians pitching.
- 3
Cleveland Guardians season record: 42–39 (52% win rate).
- 4
Seattle Mariners season record: 41–41 (50% win rate).
- 5
Cleveland Guardians home: 3.9 RF/G, 3.9 RA/G (53% home win rate).
- 6
Cleveland Guardians last 5: 3.8 RF/G, 2.8 RA/G (2d rest, 6 G last 7d).
- 7
Seattle Mariners last 5: 1.8 RF/G, 4.8 RA/G (1d rest, 6 G last 7d).
- 8
Moneyline edge vs market: +2.2%.
How This Prediction Was Made
Show model inputs ▼
Team Data Inputs
| Metric | Mariners | Guardians |
|---|---|---|
| Season Win% | 50.0% | 51.9% |
| Games Played | 82 | 81 |
| Season RF/G | 4.04 | 3.95 |
| Season RA/G | 3.99 | 4.05 |
| Run Diff/G | 0.05 | -0.10 |
| Last-5 RF/G | 1.80 | 3.80 |
| Last-5 RA/G | 4.80 | 2.80 |
| Venue RF/G | 4.20 | 3.92 |
| Venue RA/G | 4.32 | 3.89 |
| Venue Win% | 46.3% | 52.8% |
| Form (last-5) | 2/5 W | 2/5 W |
| Rest Days | 1 | 2 |
| Games (Last 7d) | 6 | 6 |
| Data Quality | 100% | 100% |
Run Projection Formula
Projected runs = weighted blend of offense + opponent defense (season & recent) + venue split.
| Component | Value | Wt | Contrib |
|---|---|---|---|
| Season RF/G | 4.04 | 30% | 1.211 |
| Opp Season RA/G | 4.05 | 30% | 1.215 |
| Recent RF/G (5G) | 1.80 | 15% | 0.270 |
| Opp Recent RA/G | 2.80 | 15% | 0.420 |
| Venue RF/G | 4.20 | 5% | 0.210 |
| Opp Venue RA/G | 3.89 | 5% | 0.194 |
| Projected runs | 3.5 | ||
| Component | Value | Wt | Contrib |
|---|---|---|---|
| Season RF/G | 3.95 | 30% | 1.185 |
| Opp Season RA/G | 3.99 | 30% | 1.196 |
| Recent RF/G (5G) | 3.80 | 15% | 0.570 |
| Opp Recent RA/G | 4.80 | 15% | 0.720 |
| Venue RF/G | 3.92 | 5% | 0.196 |
| Opp Venue RA/G | 4.32 | 5% | 0.216 |
| Home bonus | 0.12 | — | 0.120 |
| Projected runs | 4.2 | ||
Win Probability Blend (Home)
Three signals are blended to produce the final home win probability.
| Signal | Prob | Weight | Contribution |
|---|---|---|---|
| Run margin (projected score diff) | 57.0% | 65% | 37.05% |
| Team strength (win% + venue) | 51.1% | 25% | 12.78% |
| Recent form (last-5 W/L) | 50.0% | 10% | 5.00% |
| Final home win probability | 55% | ||
Confidence Score Breakdown
| Factor | Points |
|---|---|
| Base (win probability distance from 50%) | +53 |
| Run margin bonus (larger margin = more predictable) | +2.7 |
| Data quality adjust (more game history = tighter estimates) | +10 |
| Form agreement (recent form aligns with season record) | 0 |
| Market odds available (confirms edge vs vig) | 0 |
| Final confidence score (high) | 66 |
Market Edge Analysis
Edge = model probability minus market-implied probability. Positive edge = model sees value vs the book.
| Bet Type | Edge | Signal |
|---|---|---|
| Moneyline | +2.2% | no edge |
| Run Line (-1.5) | -2.5% | no edge |
| Over/Under | -0.3% | no edge |
| Guardians Team Total | +6.8% | ✓ value |
| Mariners Team Total | -3.2% | no edge |
| F5 Moneyline | +8.4% | ✓ value |
| F5 Over/Under | -3.5% | no edge |
4%+ edge threshold required for a value bet recommendation.
Seattle Mariners vs Cleveland Guardians Prediction — Expert Analysis
Our model projects Cleveland Guardians to win this matchup with a 55% win probability. The predicted final score is Mariners 3.5 – Guardians 4.2.
Seattle Mariners come into this game with a 41-41 record, good for a 50.0% winning percentage.
Cleveland Guardians are 42-39 at home this season, with a 51.9% overall win rate. Home field advantage gives them an additional 3-4% boost to their projected win probability.
Our best bet for this matchup is the Cleveland Guardians Team Total Over 3.5, which carries a high confidence rating based on current statistical inputs.