MLB ·
Boston Red Sox vs Seattle Mariners result (9:8) on 1 Sep 2026 (MLB): 5 profitable pros on Polymarket/Kalshi took positions, 67% backing Seattle Mariners to win. See who got it right, plus both teams' form.
Final score: Boston Red Sox 9:8 Seattle Mariners (2026-09-01). Before the result, 67% of 3 profitable pros with a win/draw position backed Seattle Mariners to win — that call was wrong.
5 profitable pros (listed on Tips, cumulative P&L above zero) hold positions on this match. Latest win/draw pick per pro: Boston Red Sox 1 (33%) · Seattle Mariners 2 (67%).
Boston Red Sox, last 5: L L W L L. Seattle Mariners, last 5: L L L L W. Head-to-head, last 5 meetings (Boston Red Sox wins – draws – Seattle Mariners wins): 3-0-2; latest 2026-06-22: Seattle Mariners 3:1 Boston Red Sox.
Sources: public prices and positions on Polymarket and Kalshi; results from public sports data. Data as of 2026-09-01 09:23 UTC+8. How we calculate: methodology
5 profitable pros have positions on this match. Latest win/draw pick per pro: Boston Red Sox to win 1 (33%) · Seattle Mariners to win 2 (67%).
| 2026-08-31 | vs New York Yankees | 1:16 | L |
| 2026-08-30 | vs New York Yankees | 2:9 | L |
| 2026-08-30 | vs New York Yankees | 6:0 | W |
| 2026-08-29 | vs New York Yankees | 0:1 | L |
| 2026-08-27 | vs Miami Marlins | 0:4 | L |
| 2026-08-31 | vs Toronto Blue Jays | 0:7 | L |
| 2026-08-30 | vs Toronto Blue Jays | 3:4 | L |
| 2026-08-29 | vs Toronto Blue Jays | 1:8 | L |
| 2026-08-27 | vs Philadelphia Phillies | 0:6 | L |
| 2026-08-26 | vs Philadelphia Phillies | 4:1 | W |
| 2026-06-22 | Seattle Mariners | 3:1 | Boston Red Sox |
| 2026-06-21 | Seattle Mariners | 1:5 | Boston Red Sox |
| 2026-06-20 | Seattle Mariners | 2:6 | Boston Red Sox |
| 2025-06-19 | Seattle Mariners | 1:3 | Boston Red Sox |
| 2025-06-18 | Seattle Mariners | 8:0 | Boston Red Sox |
| Date | Match | Pick | Result |
|---|---|---|---|
| 2026-09-01 | kitopesivan Polymarket | Seattle Mariners vs Boston Red Sox O/U 15.5 | Won |
| 2026-09-01 | ssl132 Polymarket | Seattle Mariners to win | Lost |
| 2026-09-01 | BillBenter2026 Polymarket | Seattle Mariners to win | Lost |
| 2026-09-01 | Wrong-Bloomer-Cucumber Polymarket | Boston Red Sox to win | Won |
| 2026-09-01 | Terrific-Crush Polymarket | Seattle Mariners vs Boston Red Sox O/U 7.5 | Won |