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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 5.5 | 0% | — | — | — · <1¢ | — | ended |
| Spread -1.5 | 100% | +57 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| O/U 6.5 | 0% | −59 pts | — | — · <1¢ | — | ended |
| O/U 7.5 | 0% | −47 pts | — | — · <1¢ | — | ended |
| Spread -2.5 | 100% | +68 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| Spread -1.5 | 0% | −27 pts | — | — · <1¢ | — | ended |
| O/U 4.5 | 100% | — | — | >99¢ · 100¢ (<1¢) | — | ended |
| O/U 8.5 | 0% | −40 pts | — | — · <1¢ | — | ended |
| Spread -2.5 | 0% | −19 pts | — | — · <1¢ | — | ended |
| O/U 3.5 | 100% | — | — | 81¢ · 100¢ (19¢) | — | ended |
| NRFI | 0% | −44 pts | — | — · 1¢ | — | ended |
| 1st 5 Innings Spread -1.5 | 0% | −23 pts | — | — · <1¢ | — | ended |
| 1st 5 Innings Spread -1.5 | 0% | −40 pts | — | — · <1¢ | — | ended |
| Spread -3.5 | 0% | — | — | — · 1¢ | — | ended |
| 1st 5 Innings O/U 2.5 | 0% | −68 pts | — | — · <1¢ | — | ended |
| 1st 5 Innings O/U 3.5 | 0% | −53 pts | — | — · <1¢ | — | ended |
| 1st 5 Innings O/U 4.5 | 0% | −40 pts | — | — · <1¢ | — | ended |
| 1st 5 Innings O/U 5.5 | 0% | −24 pts | — | — · <1¢ | — | ended |
| 1st 5 Innings O/U 6.5 | 0% | −25 pts | — | — · <1¢ | — | ended |
| Extra Innings | 0% | −48 pts | — | — · <1¢ | — | ended |
| When | Trader | Outcome | Bet | Size | P&L now | Insider |
|---|---|---|---|---|---|---|
| 40d |  wowfarm | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox>99¢ | $3,449 | +$5 +0.2% | 4 |
| 40d | 38791873984189 | O/U 5.5 | SellUnder80¢ → 100¢ | $1,475 | −$369 −25% | — |
| 40d | beeemw | Kansas City Royals vs. Boston Red Sox | SellBoston Red Sox91¢ → 100¢ | $9,134 | −$866 −9.5% | — |
| 40d | wtylyjwyz | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox93¢ → 100¢ | $1,596 | +$124 +7.8% | 4 |
| 40d | Glistening-Belligerency2 fills | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox91¢ → 100¢ | $3,098 | +$312 +10% | 5 |
| 40d | HomeRunHazard3 fills | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox84¢ → 100¢ | $16,599 | +$3,274 +20% | 5 |
| 40d | 38791873984189 | O/U 5.5 | BuyUnder44¢ → 100¢ | $1,960 | +$2,495 +127% | 4 |
| 40d | curie2 fills | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox90¢ → 100¢ | $7,312 | +$779 +11% | 5 |
| 40d | Substantial-Service | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox94¢ → 100¢ | $2,267 | +$145 +6.4% | 4 |
| 40d | DimSumConnoisseur. | Kansas City Royals vs. Boston Red Sox | BuyKansas City Royals15¢ → 0¢ | $1,401 | −$1,401 −100% | 6 |
| 40d | 387918739841892 fills | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox68¢ → 100¢ | $5,480 | +$2,583 +47% | 6 |
| 40d | sbsigner | Kansas City Royals vs. Boston Red Sox | BuyKansas City Royals38¢ → 0¢ | $1,519 | −$1,519 −100% | 6 |
| 40d | beeemw | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox85¢ → 100¢ | $1,042 | +$188 +18% | 5 |
| 40d | paquitomillonario2 fills | O/U 5.5 | BuyUnder61¢ → 100¢ | $10,455 | +$6,684 +64% | 4 |
| 40d | justaluckydude2 fills | Kansas City Royals vs. Boston Red Sox | BuyKansas City Royals29¢ → 0¢ | $3,314 | −$3,314 −100% | 6 |
| 40d | MrCodero | O/U 6.5 | BuyOver48¢ → 0¢ | $1,487 | −$1,487 −100% | 4 |
| 40d | mjjbb | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox66¢ → 100¢ | $3,500 | +$1,803 +52% | 6 |
| 40d | gabbybb | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox66¢ → 100¢ | $3,000 | +$1,545 +52% | 6 |
| 40d | MLJBASEBALL | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox67¢ → 100¢ | $2,284 | +$1,125 +49% | 6 |
| 40d | xifutloong36 fills | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox67¢ → 100¢ | $50,510 | +$25,248 +50% | 6 |
| 40d | dontworrybaseball | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox66¢ → 100¢ | $6,000 | +$3,091 +52% | 6 |
| 40d | ferrariChampions20262 fills | Kansas City Royals vs. Boston Red Sox | BuyKansas City Royals37¢ → 0¢ | $28,615 | −$28,615 −100% | 4 |
| 40d | pleaseplease123 | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox64¢ → 100¢ | $11,842 | +$6,661 +56% | 4 |
| 40d | sentrio | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox63¢ → 100¢ | $1,572 | +$923 +59% | 4 |
| 40d | ferrariChampions2026 | Kansas City Royals vs. Boston Red Sox | BuyBoston Red Sox63¢ → 100¢ | $9,599 | +$5,637 +59% | 4 |
| 40d | ferrariChampions2026 | Spread -1.5 | BuyKansas City Royals58¢ → 0¢ | $1,959 | −$1,959 −100% | 12 |
In the upcoming MLB game between the Kansas City Royals and Boston Red Sox, scheduled for September 13 at 1:35PM 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%.