Kansas City Royals vs. Boston Red Sox

$138.8K Vol
Sep 20, 2026
Active
Probability Trend
Boston Red Sox 65.5%
Kansas City Royals 34.5%

Core Summary

According to the latest prediction market data for the query “Kansas City Royals vs. Boston Red Sox”, traders have formed a strong consensus.

Currently, 1st 5 Innings O/U 2.5 is dominating the market with an overwhelming 7,150% chance of winning. 1st 5 Innings O/U 3.5 follows in second place at 6,400%, while O/U 6.5 sits in third with 5,900%. The betting volume for this specific market has already reached $138.8K, reflecting intense industry interest.

Breakdown of Competitive Tiers

To better assess where each potential outcome stands, the market can be segmented into three distinct trading tiers based on implied probability and contract pricing:

🥇 Tier 1: The Dominant Leader

  • 1st 5 Innings O/U 2.5 (7,150%): Currently commanding the highest probability, 1st 5 Innings O/U 2.5 is heavily favored by the order book. Traders looking to back this outcome face a “Buy Yes” contract price of 7,150¢, signaling a high degree of market conviction.

🥈 Tier 2: The Primary Challengers

  • 1st 5 Innings O/U 3.5 (6,400%): Positioned as the most viable alternative, 1st 5 Innings O/U 3.5 maintains a 6,400% chance of resolving true. Its “Buy Yes” shares currently trade at 6,400¢.
  • O/U 6.5 (5,900%): Sitting in third place with a 5,900% probability, the market shows measured skepticism toward O/U 6.5, treating it as an outside wildcard unless momentum shifts.

🥉 Tier 3: The Long-Tail Options (Combining for ~0%)

Beyond the top three choices, a wide field of macro variables and long-shot outcomes are being tracked. While their individual probabilities hover low, they represent crucial hedges for speculative traders:

  • Alternative Options: This includes 1st 5 Innings O/U 4.5 (5,850%), 1st 5 Innings O/U 5.5 (5,550%), and 1st 5 Innings O/U 6.5 (5,300%).
  • Speculative Volume: Despite low statistical likelihood, certain long-tail contracts like Spread -2.5 are still attracting notable interest.

Comprehensive Order Book & Pricing Dashboard

The table below outlines the full breakdown of contract prices, probabilities, and market depth for all listed outcomes in this prediction pool:

RankPredicted OutcomeWin ProbabilityTrading VolumeBuy Yes (Cost)Buy No (Cost)
11st 5 Innings O/U 2.57150.0%7150¢-7050¢
21st 5 Innings O/U 3.56400.0%6400¢-6300¢
3O/U 6.55900.0%$1875900¢-5800¢
41st 5 Innings O/U 4.55850.0%5850¢-5750¢
51st 5 Innings O/U 5.55550.0%5550¢-5450¢
61st 5 Innings O/U 6.55300.0%5300¢-5200¢
7Spread -2.55200.0%$6545200¢-5100¢
8O/U 7.55100.0%$1.9K5100¢-5000¢
9Spread -1.55050.0%$1085050¢-4950¢
10NRFI5000.0%$195000¢-4900¢
111st 5 Innings Spread -1.55000.0%$105000¢-4900¢
121st 5 Innings Spread -1.55000.0%$105000¢-4900¢
13Extra Innings5000.0%5000¢-4900¢
14Spread -2.54300.0%$6544300¢-4200¢
15O/U 8.53400.0%$623400¢-3300¢
16Kansas City Royals vs. Boston Red Sox3350.0%$129.8K3350¢-3250¢
17Spread -1.52000.0%$1082000¢-1900¢

Result Rules

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.

Trade Activities

Here is the trade activities for this event.

Sep 13, 2026

  • 11:55 AM
    GMgmgngl
    $2.00

    Bought 3.278689 Over for Kansas City Royals vs. Boston Red Sox: O/U 6.5 at 0.61

  • 11:52 AM
    JEJeremyEllis11
    $4.00

    Bought 9.302326 Boston Red Sox for Spread: Boston Red Sox (-1.5) at 0.43

  • 11:51 AM
    JEJeremyEllis11
    $2.90

    Sold 9.37 Boston Red Sox for Spread: Boston Red Sox (-2.5) at 0.31

  • 11:51 AM
    JEJeremyEllis11
    $3.00

    Bought 9.375 Boston Red Sox for Spread: Boston Red Sox (-2.5) at 0.32

  • 11:01 AM
    TOTopPato
    $105.00

    Bought 244.18 Boston Red Sox for Spread: Boston Red Sox (-1.5) at 0.43

  • 11:00 AM
    JAJAMJAMJAM4
    $586.52

    Bought 1364 Boston Red Sox for Spread: Boston Red Sox (-1.5) at 0.43

  • 10:26 AM
    XPxp6666
    $10.00

    Bought 18.867925 Under for Kansas City Royals vs. Boston Red Sox: O/U 7.5 at 0.53

  • 10:18 AM
    RIRicardoRoberto
    $1.00

    Bought 1.587302 Boston Red Sox for Kansas City Royals vs. Boston Red Sox at 0.63

  • 09:15 AM
    OGogkarmism
    $17.81

    Sold 31.24 Kansas City Royals for Spread: Boston Red Sox (-1.5) at 0.57

  • 08:32 AM
    OGogkarmism
    $18.12

    Bought 31.24138 Kansas City Royals for Spread: Boston Red Sox (-1.5) at 0.58

  • 08:21 AM
    JAJAXY7
    $9.00

    Bought 32.142858 Kansas City Royals for Spread: Kansas City Royals (-1.5) at 0.28

  • 08:12 AM
    4545645644gbh
    $1.04

    Bought 1.704917 Over for Kansas City Royals vs. Boston Red Sox: O/U 6.5 at 0.61

Whales Wallets That Are Betting on This Event

PL1
pleaseplease123
Event PnL
+$385.57
Volume
$77,005.01
Positions
Boston Red Sox
FE2
ferrariChampions2026
Event PnL
-$130.21
Volume
$66,366.68
Positions
Kansas City RoyalsKansas City Royals
DO3
Donkey14
Event PnL
-$303.91
Volume
$27,312.86
Positions
Kansas City Royals
MO4
monkeymashingkeyboard
Event PnL
+$613.06
Volume
$24,499.57
Positions
Boston Red Sox
WA5
wapol
Event PnL
+$7.45
Volume
$4,605.17
Positions
Boston Red SoxKansas City RoyalsBoston Red Sox+1
SE6
sentrio
Event PnL
+$36.63
Volume
$4,268.28
Positions
Boston Red SoxKansas City Royals
587
0x5811…6071
Event PnL
-$11.25
Volume
$3,008.20
Positions
Kansas City RoyalsKansas City RoyalsKansas City Royals
NI8
nigiri99
Event PnL
+$8.93
Volume
$2,962.00
Positions
Boston Red SoxBoston Red SoxOver+2

Frequently Asked Questions

What is the current market consensus on "Kansas City Royals vs. Boston Red Sox"?

As of the latest update, 1st 5 Innings O/U 2.5 leads the field as the frontrunner with a 7,150% win probability, followed by 1st 5 Innings O/U 3.5 at 6,400% and O/U 6.5 at 5,900%. Total trading volume for this pool has reached $138.8K, indicating deep liquidity and high trader engagement.

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