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| Outcome | Chance | 24h | 1 week | Bid · Ask | 24h volume | Ends |
|---|---|---|---|---|---|---|
| Kansas City Royals vs. Boston Red Sox | 0% | −37 pts | — | — · <1¢ | — | ended |
| O/U 8.5 | 0% | −48 pts | — | — · <1¢ | — | ended |
| Spread -1.5 | 100% | +54 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| Spread -2.5 | 100% | +64 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| O/U 9.5 | 0% | −36 pts | — | — · <1¢ | — | ended |
| NRFI | 0% | −44 pts | — | — · <1¢ | — | ended |
| O/U 7.5 | 0% | −55 pts | — | — · <1¢ | — | ended |
| Spread -2.5 | 0% | −17 pts | — | — · <1¢ | — | ended |
| Spread -1.5 | 0% | −25 pts | — | — · <1¢ | — | ended |
| O/U 5.5 | 100% | — | — | >99¢ · 100¢ (<1¢) | — | ended |
| Extra Innings | 0% | −49 pts | — | — · <1¢ | — | ended |
| 1st 5 Innings O/U 4.5 | 0% | −49 pts | — | — · <1¢ | — | ended |
| O/U 6.5 | 0% | — | — | — · 1¢ | — | ended |
| Spread -4.5 | 0% | — | — | — · <1¢ | — | ended |
| Spread -3.5 | 100% | — | — | >99¢ · 100¢ (<1¢) | — | ended |
| O/U 4.5 | 100% | — | — | 81¢ · 100¢ (19¢) | — | ended |
| 1st 5 Innings Spread -1.5 | 0% | −37 pts | — | — · <1¢ | — | ended |
| 1st 5 Innings Spread -1.5 | 0% | −45 pts | — | — · <1¢ | — | ended |
| 1st 5 Innings O/U 2.5 | 0% | −67 pts | — | — · 1¢ | — | ended |
| 1st 5 Innings O/U 3.5 | 0% | −54 pts | — | — · 1¢ | — | ended |
| 1st 5 Innings O/U 5.5 | 0% | −40 pts | — | — · <1¢ | — | ended |
| 1st 5 Innings O/U 6.5 | 0% | −33 pts | — | — · <1¢ | — | ended |
| When | Trader | Outcome | Bet | Size | P&L now | Insider |
|---|---|---|---|---|---|---|
| 34d |  ForAndWithYou | O/U 8.5 | SellUnder>99¢ | $5,014 | −$5 −0.1% | — |
| 34d | kkookkoo2 fills | Kansas City Royals vs. Boston Red Sox | SellBoston Red Sox>99¢ | $31,100 | −$31 −0.1% | — |
| 34d |  wowfarm | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox>99¢ | $5,359 | +$11 +0.2% | 4 |
| 34d | curie | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox97¢ → 100¢ | $4,083 | +$122 +3.0% | 4 |
| 34d | Flaznorp | Spread -2.5 | BuyKansas City Royals58¢ → 0¢ | $2,330 | −$2,330 −100% | 4 |
| 34d | kkookkoo3 fills | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox73¢ → 100¢ | $24,633 | +$9,135 +37% | 6 |
| 34d | Substantial-Service | Kansas City Royals vs. Boston Red Sox | BuyKansas City Royals33¢ → 0¢ | $1,791 | −$1,791 −100% | 6 |
| 34d | dabossrealman | Kansas City Royals vs. Boston Red Sox | BuyKansas City Royals21¢ → 0¢ | $1,449 | −$1,449 −100% | 6 |
| 34d | justaluckydude | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox67¢ → 100¢ | $1,983 | +$980 +49% | 6 |
| 34d | justaluckydude | Kansas City Royals vs. Boston Red Sox | BuyKansas City Royals30¢ → 0¢ | $1,387 | −$1,387 −100% | 6 |
| 34d | sietechips | O/U 8.5 | BuyOver51¢ → 0¢ | $5,000 | −$5,000 −100% | 14 |
| 34d | ForAndWithYou | O/U 8.5 | BuyUnder50¢ → 100¢ | $2,041 | +$2,041 +100% | 14 |
| 34d | ferrariChampions2026 | Kansas City Royals vs. Boston Red Sox | BuyKansas City Royals34¢ → 0¢ | $3,296 | −$3,296 −100% | 4 |
| 34d | Jarod21 | O/U 8.5 | BuyUnder50¢ → 100¢ | $1,224 | +$1,224 +100% | 14 |
| 34d | kabina- | O/U 8.5 | BuyUnder50¢ → 100¢ | $2,933 | +$2,933 +100% | 14 |
| 34d | Talvez10 | O/U 8.5 | BuyUnder49¢ → 100¢ | $8,212 | +$8,547 +104% | 14 |
| 34d | ferrariChampions2026 | Spread -1.5 | BuyKansas City Royals52¢ → 0¢ | $11,783 | −$11,783 −100% | 14 |
| 34d | fatcuban | NRFI | BuyNo53¢ → 100¢ | $1,166 | +$1,034 +89% | 4 |
| 34d | ForMyFamily1 | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox67¢ → 100¢ | $2,000 | +$985 +49% | 4 |
| 35d | breezybets | O/U 8.5 | BuyOver52¢ → 0¢ | $1,196 | −$1,196 −100% | 14 |
| 35d | monkeymashingkeyboard | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox66¢ → 100¢ | $2,028 | +$1,044 +52% | 4 |
| 35d | HomeRunHazard | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox65¢ → 100¢ | $3,010 | +$1,621 +54% | 4 |
| 35d | MAGATheeStallion | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox65¢ → 100¢ | $1,999 | +$1,077 +54% | 4 |
| 35d | dbbbt | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox65¢ → 100¢ | $1,682 | +$906 +54% | 4 |
cybercherry2,700 shares
Usernombre1,500 sharesIn the upcoming MLB game between the Kansas City Royals and Boston Red Sox, scheduled for September 12 at 4:10PM ET: This market will resolve to "Kansas City Royals" if the Kansas City Royals win the game. This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.
Sources: Polymarket's Gamma API, its CLOB price history and its Data API, read every two minutes. Prices are each outcome's Yes price, which is the market's probability: 0¢ for Kansas City Royals vs. Boston Red Sox means the market gives it about 0%.