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Live prediction market odds for Kansas City Royals vs. Boston Red Sox (4:10 PM ET). Compare prices across Kalshi and Polymarket US and Novig and Polymarket and ProphetX.

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Claim offerLegal in USAVerified Sep 14, 2026

MARKET RESOLVEDKalshi / Polymarket US / Novig / Polymarket / ProphetX

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Boston Red Sox Wins: Kansas City Royals vs. Boston Red Sox (4:10 PM ET)

MLB·Resolved 2026-09-12

This market resolved on 2026-09-12. Boston Red Sox was the officially declared outcome. Prior to resolution, the market peaked at 98%.

About This Market

Kansas City Royals vs.

Kansas City Royals vs. Boston Red Sox (4:10 PM ET): MLB game held on 2026-09-12. Review the historical prediction market odds from Kalshi, Polymarket, and more on Prediction Hunt.

Price History

Multi-Platform Probabilities
Loading 30D data…

Final Closing Odds

5 platforms
Candidate
Kalshi
Polymarket US
Novig
Polymarket
ProphetX
Roman Anthony Over 0.5 Hits
100%————
Wilyer Abreu Over 0.5 RBIs
100%————
Bobby Witt Jr. Over 0.5 Hits + Runs + RBIs
99%————
Carter Jensen Over 0.5 Hits
99%————
Carter Jensen Over 0.5 Hits + Runs + RBIs
99%————
Carter Jensen Over 0.5 RBIs
99%————
Carter Jensen Over 1.5 Total Bases
99%————
Carter Jensen Over 2.5 Hits + Runs + RBIs
99%————
Carter Jensen Over 2.5 Total Bases
99%————
Carter Jensen Over 3.5 Total Bases
99%————
Randy Dobnak Over 1.5 Strikeouts
99%————
Randy Dobnak Over 15.5 Pitcher Outs
99%————
Randy Dobnak Over 2.5 Strikeouts
99%————
Ranger Suarez Over 17.5 Pitcher Outs
99%————
Ranger Suarez Over 2.5 Strikeouts
99%————
Ranger Suarez Over 3.5 Strikeouts
99%————
Roman Anthony Over 0.5 Hits + Runs + RBIs
99%————
Salvador Perez Over 0.5 Hits
99%————
Salvador Perez Over 0.5 Hits + Runs + RBIs
99%————
Bobby Witt Jr. Over 0.5 Hits
98%————
Wilyer Abreu Over 1.5 Total Bases
98%————
Boston Red Sox spread plus 2.5
———91%95%
Total under 10.5
————90%
Carter Jensen Under 0.5 Home Runs
————89%
Total under 9.5
———92%86%
Kansas City Royals spread plus 4.5
————89%
Boston Red Sox spread plus 3.5
————89%
Boston Red Sox spread plus 1.5
———88%88%
Bobby Witt Jr. Under 0.5 Home Runs
————87%
Total under 8.5
——60%91%86%
Wilyer Abreu Under 0.5 Home Runs
————85%
Total under 7.5
———88%79%
Boston Red Sox spread minus 2.5
78%—38%96%84%
Kansas City Royals spread plus 3.5
————80%
Wilyer Abreu Over 0.5 Hits + Runs + RBIs
76%————
Boston Red Sox spread plus 1.0
————74%
Boston Red Sox spread minus 1.5
95%—40%67%78%
Caleb Durbin Over 0.5 Hits + Runs + RBIs
70%————
Boston Red SoxWINNER
99%61%70%98%99%
Ranger Suarez Under 5.5 Strikeouts
————68%
Total under 6.5
————66%
Isaac Collins Under 1.5 Hits + Runs + RBIs
————65%
Randy Dobnak Under 3.5 Strikeouts
————65%
Roman Anthony Under 2.5 Hits + Runs + RBIs
————64%
Michael Massey Under 1.5 Hits + Runs + RBIs
————63%
Roman Anthony Over 1.5 Hits + Runs + RBIs
99%———62%
Vinnie Pasquantino Under 1.5 Hits + Runs + RBIs
————60%
Boston Red Sox spread minus 1.0
————60%
Kyle Isbel Over 0.5 Hits + Runs + RBIs
57%———60%
Adley Rutschman Over 1.5 Hits + Runs + RBIs
99%———58%
Carter Jensen Under 1.5 Hits + Runs + RBIs
————58%
Nick Loftin Under 1.5 Hits + Runs + RBIs
————58%
Caleb Durbin Under 1.5 Hits + Runs + RBIs
————57%
Salvador Perez Under 1.5 Hits + Runs + RBIs
————57%
Matthew Lugo Over 0.5 Hits + Runs + RBIs
57%———57%
Ranger Suarez Over 4.5 Strikeouts
99%———57%
Bobby Witt Jr. Over 1.5 Hits + Runs + RBIs
54%———59%
Mickey Gasper Over 1.5 Hits + Runs + RBIs
99%———56%
Total over 8.0
————56%
Total under 9.0
————56%
Isiah Kiner-Falefa Under 1.5 Hits + Runs + RBIs
————55%
Wilyer Abreu Over 1.5 Hits + Runs + RBIs
49%———61%
Randy Dobnak Over 3.5 Strikeouts
67%———40%
Jarren Duran Over 1.5 Hits + Runs + RBIs
50%———55%
Isiah Kiner-Falefa Over 1.5 Hits + Runs + RBIs
————52%
Jarren Duran Under 1.5 Hits + Runs + RBIs
————52%
Nick Sogard Over 1.5 Hits + Runs + RBIs
48%———53%
Trevor Story Under 1.5 Hits + Runs + RBIs
————50%
Caleb Durbin Over 1.5 Hits + Runs + RBIs
47%———52%
Nick Sogard Under 1.5 Hits + Runs + RBIs
————49%
Bobby Witt Jr. Under 1.5 Hits + Runs + RBIs
————49%
Matthew Lugo Under 0.5 Hits + Runs + RBIs
————49%
Carter Jensen Over 1.5 Hits + Runs + RBIs
99%———48%
Adley Rutschman Under 1.5 Hits + Runs + RBIs
————48%
Vinnie Pasquantino Over 1.5 Hits + Runs + RBIs
45%———50%
Roman Anthony Over 1.5 Total Bases
47%————
Total over 5.5
99%—43%—51%
Total over 9.0
————46%
Total under 8.0
————46%
Roman Anthony Under 1.5 Hits + Runs + RBIs
————46%
Wilyer Abreu Under 1.5 Hits + Runs + RBIs
————46%
Mickey Gasper Under 1.5 Hits + Runs + RBIs
————45%
Bobby Witt Jr. Over 2.5 Hits + Runs + RBIs
45%————
Isaac Collins Over 1.5 Hits + Runs + RBIs
————45%
Randy Dobnak Over 4.5 Strikeouts
44%————
Roman Anthony Over 1.5 Hits
43%————
Roman Anthony Over 2.5 Hits + Runs + RBIs
40%———44%
Kansas City Royals spread plus 1.0
————42%
Kyle Isbel Under 0.5 Hits + Runs + RBIs
————41%
Ranger Suarez Over 6.5 Strikeouts
40%————
Trevor Story Over 1.5 Hits + Runs + RBIs
18%———58%
Ranger Suarez Over 5.5 Strikeouts
100%———38%
Wilyer Abreu Over 2.5 Hits + Runs + RBIs
30%———44%
Wilyer Abreu Over 0.5 Hits
36%————
Salvador Perez Over 1.5 Hits + Runs + RBIs
20%———51%
Kansas City Royals spread plus 1.5
——60%33%25%
Michael Massey Over 1.5 Hits + Runs + RBIs
20%———45%
Ranger Suarez Over 7.5 Strikeouts
32%————
Nick Loftin Over 1.5 Hits + Runs + RBIs
17%———44%
Caleb Durbin Over 0.5 RBIs
30%————
Caleb Durbin Over 2.5 Hits + Runs + RBIs
30%————
Kansas City Royals spread minus 1.0
————27%
Bobby Witt Jr. Over 3.5 Hits + Runs + RBIs
24%————
Kansas City Royals spread plus 2.5
——63%4%23%
Roman Anthony Over 3.5 Hits + Runs + RBIs
23%————
Total over 7.5
22%——12%25%
Wilyer Abreu Over 1.5 Hits
20%————
Wilyer Abreu Over 4.5 Total Bases
20%————
Caleb Durbin Over 0.5 Hits
19%————
Roman Anthony Over 3.5 Total Bases
19%————
Salvador Perez Over 1.5 Hits
19%————
Wilyer Abreu Over 0.5 Home Runs
20%———18%
Carter Jensen Over 4.5 Total Bases
19%————
Total over 8.5
1%—41%9%18%
Carter Jensen Over 1.5 RBIs
18%————
Kansas City Royals
1%39%31%3%5%
Mickey Gasper Over 0.5 Home Runs
21%———14%
Caleb Durbin Over 3.5 Hits + Runs + RBIs
17%————
Wilyer Abreu Over 1.5 RBIs
17%————
Roman Anthony Over 0.5 Home Runs
17%———17%
Wilyer Abreu Over 4.5 Hits + Runs + RBIs
16%————
Kansas City Royals spread minus 1.5
1%——12%20%
Bobby Witt Jr. Over 2.5 Hits
16%————
Bobby Witt Jr. Over 3.5 Hits
16%————
Adley Rutschman Over 0.5 Home Runs
17%———13%
Bobby Witt Jr. Over 0.5 RBIs
15%————
Roman Anthony Over 4.5 Hits + Runs + RBIs
15%————
Boston Red Sox spread minus 4.5
————15%
Carter Jensen Over 3.5 Hits + Runs + RBIs
15%————
Ranger Suarez Over 8.5 Strikeouts
15%————
Salvador Perez Over 0.5 RBIs
15%————
Bobby Witt Jr. Over 1.5 Total Bases
14%————
Carter Jensen Over 1.5 Hits
14%————
Bobby Witt Jr. Over 1.5 Hits
14%————
Carter Jensen Over 0.5 Home Runs
99%———13%
Roman Anthony Over 4.5 Total Bases
13%————
Wilyer Abreu Over 2.5 Total Bases
13%————
Wilyer Abreu Over 3.5 Hits + Runs + RBIs
13%————
Roman Anthony Over 0.5 RBIs
11%————
Salvador Perez Over 1.5 RBIs
11%————
Bobby Witt Jr. Over 0.5 Home Runs
5%———17%
Bobby Witt Jr. Over 1.5 RBIs
11%————
Salvador Perez Over 1.5 Total Bases
11%————
Salvador Perez Over 4.5 Hits + Runs + RBIs
10%————
Salvador Perez Over 0.5 Home Runs
3%———15%
Kansas City Royals spread minus 2.5
1%——9%9%
Randy Dobnak Over 5.5 Strikeouts
9%————
Roman Anthony Over 2.5 Total Bases
9%————
Jarren Duran Over 0.5 Home Runs
6%———10%
Bobby Witt Jr. Over 2.5 Total Bases
8%————
Caleb Durbin Over 4.5 Hits + Runs + RBIs
8%————
Carter Jensen Over 4.5 Hits + Runs + RBIs
8%————
Total over 9.5
6%——8%14%
Trevor Story Over 0.5 Home Runs
2%———13%
Caleb Durbin Over 2.5 Total Bases
7%————
Caleb Durbin Over 1.5 RBIs
6%————
Randy Dobnak Over 6.5 Strikeouts
6%————
Salvador Perez Over 2.5 Hits
6%————
Wilyer Abreu Over 5.5 Total Bases
6%————
Bobby Witt Jr. Over 3.5 Total Bases
5%————
Bobby Witt Jr. Over 4.5 Total Bases
5%————
Bobby Witt Jr. Over 5.5 Total Bases
5%————
Roman Anthony Over 1.5 Home Runs
5%————
Salvador Perez Over 3.5 Hits + Runs + RBIs
5%————
Wilyer Abreu Over 3.5 Total Bases
5%————
Vinnie Pasquantino Over 0.5 Home Runs
2%———8%
Caleb Durbin Over 1.5 Total Bases
5%————
Salvador Perez Over 2.5 Hits + Runs + RBIs
5%————
Wilyer Abreu Over 2.5 RBIs
5%————
Caleb Durbin Over 2.5 Hits
4%————
Kyle Isbel Over 0.5 Home Runs
4%————
Caleb Durbin Over 3.5 Total Bases
4%————
Caleb Durbin Over 1.5 Hits
3%————
Nick Loftin Over 0.5 Home Runs
3%————
Wilyer Abreu Over 2.5 Hits
3%————
Roman Anthony Over 1.5 RBIs
3%————
Bobby Witt Jr. Over 1.5 Home Runs
2%————
Bobby Witt Jr. Over 4.5 Hits + Runs + RBIs
2%————
Ranger Suarez Over 9.5 Strikeouts
2%————
Roman Anthony Over 2.5 Hits
2%————
Salvador Perez Over 1.5 Home Runs
2%————
Wilyer Abreu Over 1.5 Home Runs
2%————
Michael Massey Over 0.5 Home Runs
2%————
Caleb Durbin Over 0.5 Home Runs
1%————
Carter Jensen Over 1.5 Home Runs
1%————
Carter Jensen Over 2.5 Hits
1%————
Nick Sogard Over 0.5 Home Runs
1%————
Roman Anthony Over 3.5 Hits
1%————
Wilyer Abreu Over 3.5 Hits
0%————
Boston wins by over 3.5 runs
—————
Kansas City wins by over 3.5 runs
—————
Over 2.5 runs scored
—————
Over 3.5 runs scored
—————
Total over 10.5
—————
Total over 11.5
—————
Total over 12.5
—————
Total over 4.5
—————
Total over 6.5
—————

Resolution Oracles

KalshiKalshi
Kalshi Rules
PolymarketPolymarket
UMA Optimistic OracleConsensus of Sources
ProphetXProphetX
ProphetX Rules
Read Full Market Rulebooks
Stats
Spread38.5%
Platforms5
Candidates2
Winner

Boston Red Sox

85.2% avg

Market RulebooksOfficial settlement criteria and edge cases

Market Rulebook: Kansas City Royals vs. Boston Red Sox (4:10 PM ET)

Official settlement criteria, resolution sources, and edge cases across Kalshi and Novig and Polymarket and Polymarket US and ProphetX.

KalshiKalshi
Primary Rule

If Kansas City wins the Kansas City vs Boston professional baseball game originally scheduled for Sep 12, 2026 at 4:10 PM EDT, then the market resolves to Yes.

Edge Cases

The following market refers to the Kansas City vs Boston professional baseball game originally scheduled for Sep 12, 2026 at 4:10 PM EDT. If this game is postponed or delayed, the market will remain open and close after the rescheduled game has finished (within two days). If the game is cancelled or rescheduled to over two days away, the market will resolve to a fair price in accordance with the rules. Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.

Resolution Oracles
Kalshi Rules
NovigNovig
Primary Rule

Kansas City Royals in Kansas City Royals @ Boston Red Sox (MLB); settled by Novig.

Edge Cases

If the contract cannot be settled on the stated outcome, Novig settles it at fair market value (FMV) instead of refunding it.

PolymarketPolymarket
Primary Rule

In 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.

Resolution Oracles
UMA Optimistic OracleConsensus of Sources
Polymarket USPolymarket US
Primary Rule

This market will settle to the winner of the Kansas City Royals vs Boston Red Sox MLB game scheduled for 2026-09-12 at 4:10PM ET. Extra innings are included if played. If the game is delayed, postponed, or suspended and not rescheduled to a date within two weeks of the originally scheduled date, the market will settle to the last fair market price. Outcome sourced from MLB.

ProphetXProphetX
Primary Rule

Sports moneyline - resolves based on official game outcome per ProphetX Prediction Rules

Resolution Oracles
ProphetX Rules

Frequently Asked Questions

What does the Kansas City Royals vs. Boston Red Sox (4:10 PM ET) prediction market track?

The outcomes listed above show how traders are pricing this question. Compare outcome prices from Kalshi, Polymarket US, Novig, Polymarket, ProphetX in one place. Each price reflects the market’s implied probability, not a guaranteed result. This event is archived; prices shown are historical.

What were the last available Kansas City Royals vs. Boston Red Sox (4:10 PM ET) odds?

The last available prices are Boston Red Sox: 99.0¢ on Kalshi, 97.5¢ on Polymarket, 99.0¢ on ProphetX, 61.0¢ on Polymarket US, 69.5¢ on Novig; Kansas City Royals: 0.5¢ on Kalshi, 2.5¢ on Polymarket, 4.6¢ on ProphetX, 39.0¢ on Polymarket US, 30.5¢ on Novig. Prices are quoted in cents per $1 share. Check the venue for executable prices and available liquidity. The last available price is not necessarily the final settlement price.

Why do Kansas City Royals vs. Boston Red Sox (4:10 PM ET) odds vary across prediction markets?

The largest price difference shown across venues is 38.5 percentage points. Venues have different traders, liquidity and fees, so their prices can differ. A price gap alone does not establish an executable arbitrage opportunity; compare settlement rules and the actual buy and sell prices.

How do Kansas City Royals vs. Boston Red Sox (4:10 PM ET) prediction market payouts work?

For example, Boston Red Sox at 85.2¢ implies about a 85.2% chance. For a standard $1 contract, a share pays $1 if its outcome settles as correct and $0 if it settles as incorrect. A winning share bought at 40¢ earns 60¢ before fees. Check each venue’s settlement rules, fees and eligibility before trading. Historical prices alone do not identify the winning outcome.

Learn more:How to Read Prediction Market PricesCompare Fees Before You TradeNew to Polymarket?

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