← Today's Slate
Monday, August 31, 2026 at 6:45 PM EDT
MLB
Seattle Mariners @ Boston Red Sox
SEA @ BOS
SEA8
BOS9
Final
Moneyline
SEABOS
46%
54%
+112-128
ML Edge
SEA-0.2%
BOS+0.2%
Total (O/U)
7.0
BetRivers
Over+17.2%
Under-17.2%
Venue
Park Factor
1.08
Hitter-friendly
Away Starter
Team:Seattle Mariners (SEA)
Pitcher:George Kirby(RHP)
Record:9-10
ERA:4.19
Home Starter
Team:Boston Red Sox (BOS)
Pitcher:Payton Tolle(RHP)
Record:8-6
ERA:3.23
Betting Insights
Key takeaways for this matchup
The Under has a 17.2% edge.
Pitching matchup: George Kirby (4.19 ERA) vs Payton Tolle (3.23 ERA).
Player Props
Player props for this game
No player props available yet
Props are typically available 12-24 hours before game time
Box Score
Final game statistics
Seattle Mariners (SEA)
| Batter | AB | R | H | RBI | BB | SO | HR |
|---|---|---|---|---|---|---|---|
| Randy ArozarenaLF | 5 | 3 | 4 | 4 | 0 | 0 | 1 |
| Dominic CanzoneDH | 5 | 0 | 2 | 2 | 0 | 1 | 0 |
| Julio RodríguezCF | 5 | 0 | 1 | 1 | 0 | 2 | 0 |
| Cal RaleighC | 5 | 1 | 1 | 1 | 0 | 1 | 1 |
| Josh Naylor1B | 4 | 0 | 0 | 0 | 1 | 1 | 0 |
| Taylor WardRF | 4 | 0 | 1 | 0 | 0 | 1 | 0 |
| Cole Young2B | 4 | 2 | 0 | 0 | 0 | 1 | 0 |
| Weston Wilson3B | 4 | 1 | 1 | 0 | 1 | 3 | 0 |
| J.P. CrawfordSS | 2 | 1 | 1 | 0 | 1 | 1 | 0 |
Pitching
| Pitcher | IP | H | R | ER | BB | SO | PC |
|---|---|---|---|---|---|---|---|
| Seranthony Domínguez | 1.0 | 0 | 0 | 0 | 0 | 0 | 8 |
| Cooper Criswell | 0.1 | 1 | 1 | 0 | 2 | 0 | 7 |
| George Kirby | 5.0 | 7 | 5 | 5 | 2 | 2 | 86 |
| Andrés Muñoz | 1.1 | 1 | 1 | 1 | 0 | 3 | 15 |
| Gabe Speier | 1.1 | 0 | 0 | 0 | 1 | 1 | 15 |
| Eduard Bazardo | 0.1 | 3 | 2 | 2 | 0 | 0 | 13 |
Boston Red Sox (BOS)
| Batter | AB | R | H | RBI | BB | SO | HR |
|---|---|---|---|---|---|---|---|
| Roman AnthonyDH | 4 | 2 | 2 | 0 | 1 | 0 | 0 |
| Mickey Gasper1B | 4 | 1 | 1 | 1 | 1 | 1 | 1 |
| Ceddanne RafaelaCF | 4 | 0 | 2 | 3 | 0 | 1 | 0 |
| Wilyer AbreuRF | 5 | 0 | 0 | 0 | 0 | 2 | 0 |
| Nick Sogard2B | 4 | 2 | 2 | 0 | 0 | 0 | 0 |
| Caleb Durbin3B | 2 | 1 | 1 | 0 | 2 | 0 | 0 |
| Jarren DuranLF | 4 | 1 | 1 | 2 | 1 | 0 | 1 |
| Trevor StorySS | 5 | 0 | 2 | 3 | 0 | 1 | 0 |
| Connor WongC | 4 | 1 | 1 | 0 | 0 | 1 | 0 |
Pitching
| Pitcher | IP | H | R | ER | BB | SO | PC |
|---|---|---|---|---|---|---|---|
| Tyron Guerrero | 0.1 | 3 | 3 | 3 | 1 | 0 | 13 |
| Alec Gamboa | 2.0 | 1 | 0 | 0 | 0 | 1 | 23 |
| Payton Tolle | 5.2 | 6 | 4 | 4 | 2 | 6 | 96 |
| Erik Miller | 1.0 | 1 | 1 | 1 | 0 | 2 | 16 |
| Aroldis Chapman | 1.0 | 0 | 0 | 0 | 0 | 2 | 15 |
Pitcher Matchup Analysis
Platoon splits, recent form, and times through the order
George Kirby (SEA)
2026 seasonvs BOS
ERA
9.00
IP
5.0
W-L
0-0
K
2
WHIP
1.80
AVG
.350
| Split | ERA | WHIP | K/9 | BB/9 | AVG | IP |
|---|---|---|---|---|---|---|
| Overall | 4.19 | 1.35 | 7.6 | 2.1 | .284 | 152.2 |
| Home | 3.21 | 1.14 | 7.8 | 2.0 | .244 | 87.0 |
| Away | 5.48 | 1.64 | 7.3 | 2.3 | .332 | 65.2 |
| Last 7 Days | 9.00 | 1.80 | 3.6 | 3.6 | .350 | 5.0 |
| Last 30 Days | 6.31 | 1.75 | 6.4 | 3.6 | .321 | 25.2 |
Opponent Batting by Handedness
| Split | AVG | OBP | SLG | OPS | AB | K |
|---|---|---|---|---|---|---|
| vs LHB | .279 | .332 | .464 | .796 | 319 | 63 |
| vs RHB | .289 | .321 | .421 | .742 | 280 | 65 |
Times Through Order
| Time | AVG | OBP | SLG | OPS | AB | K |
|---|---|---|---|---|---|---|
| 1st Time | .300 | .333 | .457 | .791 | 223 | 46 |
| 2nd Time | .290 | .346 | .444 | .790 | 214 | 44 |
| 3rd Time | .258 | .290 | .439 | .729 | 155 | 35 |
Payton Tolle (BOS)
2026 seasonvs SEA
ERA
5.40
IP
11.2
W-L
0-1
K
8
WHIP
1.43
AVG
.267
| Split | ERA | WHIP | K/9 | BB/9 | AVG | IP |
|---|---|---|---|---|---|---|
| Overall | 3.23 | 1.10 | 10.1 | 2.5 | .220 | 131.0 |
| Home | 3.88 | 1.20 | 12.3 | 2.6 | .237 | 65.0 |
| Away | 2.59 | 1.00 | 7.9 | 2.5 | .203 | 66.0 |
| Last 7 Days | 6.35 | 1.54 | 10.4 | 3.5 | .273 | 5.2 |
| Last 30 Days | 3.00 | 0.93 | 11.1 | 2.4 | .190 | 30.0 |
Opponent Batting by Handedness
| Split | AVG | OBP | SLG | OPS | AB | K |
|---|---|---|---|---|---|---|
| vs LHB | .252 | .301 | .420 | .720 | 143 | 29 |
| vs RHB | .207 | .271 | .356 | .627 | 343 | 118 |
Times Through Order
| Time | AVG | OBP | SLG | OPS | AB | K |
|---|---|---|---|---|---|---|
| 1st Time | .218 | .267 | .394 | .661 | 193 | 69 |
| 2nd Time | .229 | .279 | .404 | .684 | 188 | 50 |
| 3rd Time | .214 | .308 | .291 | .599 | 103 | 28 |
Last 5 Games
Not available yet
Season Series
This Series (3 games)
SEA wins series 2-1
Season (6 games)
BOS leads series 3-1
Weather
Not available yet
Recent Odds
Latest betting lines from various books
Moneyline
| Book | Away | Home | Time |
|---|---|---|---|
| BetRivers | +112 | -128 | 12:42 PM |
| BetMGM | +105 | -130 | 12:42 PM |
| Caesars | +105 | -115 | 12:42 PM |
| DraftKings | +111 | -119 | 12:42 PM |
| Bovada | +106 | -127 | 12:42 PM |
Totals
| Book | Total | Over | Under | Time |
|---|---|---|---|---|
| BetRivers | 7.0 | -118 | -103 | 12:42 PM |
| BetMGM | 7.0 | -115 | -105 | 12:42 PM |
| Caesars | 7.0 | -110 | -110 | 12:42 PM |
| DraftKings | 7.0 | -115 | -105 | 12:42 PM |
| Bovada | 7.0 | -120 | +100 | 12:42 PM |