TOTAL VOLUME:

$134.2b

24H VOL:

$126,324,530

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,434,646,834

406,019

Markets across

30,401

events

MATCHED EVENTS:

2,689

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Saitama Seibu Lions vs. Tohoku Rakuten Golden Eagles
kalshi
polymarket

Saitama Seibu Lions vs. Tohoku Rakuten Golden Eagles

Volume:
$283,414

Saitama Seibu Lions

 - Kalshi

Saitama Seibu Lions - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 29, 2026

Closed: Aug 23, 7:09 AM EST

kalshi

Kalshi

View
Join Kalshi and score $25 for your first trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Saitama Seibu Lions

View
100%
Yes 100¢No 0¢
100¢
N/A
$181,599
N/A
N/A
$105,502
Settled
Yes
polymarket

Saitama Seibu Lions vs. Tohoku Rakuten Golden Eagles

View
100%
25%
Yes 100¢No 0¢
0.1¢
N/A
$1,690
N/A
N/A
N/A
Settled
Yes
kalshi

Tohoku Rakuten Golden Eagles

View
0%
Yes 0¢No 100¢
100¢
N/A
$100,125
N/A
N/A
$66,035
Settled
No
Total markets: 3

Description

This event group covers two prediction markets centered around the outcome of a baseball game between the Saitama Seibu Lions and the Tohoku Rakuten Golden Eagles in Japan's Nippon Professional Baseball (NPB) league. The markets differ in their resolution mechanics and possible outcomes.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: The markets have fundamentally different resolution structures: Kalshi resolves to a binary Yes if any game occurs and a winner is declared, while Polymarket resolves to a specific team outcome or a 50-50 split for ties/cancellations.Hero tip: Traders should note that Kalshi's market will resolve to Yes in almost all scenarios where the game is played, while Polymarket's market requires specific team outcomes. This creates asymmetric risk profiles between the two platforms.

Critical divergence points:

  • Kalshi: Resolves to Yes if Saitama Seibu Lions wins OR if Tohoku Rakuten Golden Eagles wins the game scheduled for Aug 23, 2026. No mention of ties or cancellations.
  • Polymarket: Resolves to Saitama Seibu Lions if they win, Tohoku Rakuten Golden Eagles if they win, or 50-50 if the game is postponed, canceled, or ends in a tie. Explicitly handles more edge cases.
Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.

Polymarket

In the upcoming NPB game, scheduled for August 29 at 4:00AM ET: If the Saitama Seibu Lions win, the market will resolve to "Saitama Seibu Lions". If the Tohoku Rakuten Golden Eagles win, the market will resolve to "Tohoku Rakuten Golden Eagles". 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 will be official information from the NPB. A consensus of credible reporting may also be used.

Kalshi

Markets resolve to Yes if the specified team wins the Saitama Seibu Lions vs Tohoku Rakuten Golden Eagles Japan NPB game originally scheduled for Aug 23, 2026 at 3:00 AM EDT. If postponed or delayed, markets stay open until the rescheduled game finishes within two days. Cancellations or reschedules beyond two days lead to fair price resolution. Ties resolve markets to 50/50.

Frequently asked questions

The dashboard tracks the NPB championship race across platforms like Polymarket and Kalshi, showing how traders price the likelihood of each team winning. It aggregates volume of $283,414 and 24-hour volume of $272,568, offering a live view of market sentiment and consensus. The display updates continuously, so users can monitor shifts in odds as the season progresses and key games unfold.

Prediction market odds on this market often diverge from traditional sportsbook lines due to different participant dynamics and data inputs. While sportsbooks may set their lines based on broader public betting trends and expert analysis, prediction markets reflect the real-time aggregated beliefs of traders, which can result in sharper or more volatile pricing depending on recent performance and news.