Question 1

What factors influence the odds for the National League Champion?

Accepted Answer

Team performance during the regular season, player injuries, and trade acquisitions significantly impact the odds. Additionally, historical performance and head-to-head matchups also play a crucial role.

Question 2

How do prediction markets adjust to changes in team standings?

Accepted Answer

Prediction markets react in real-time to changes in team standings, such as winning streaks or losing streaks. News about player injuries or trades can also lead to immediate shifts in odds.

Question 3

What is at stake for the National League Champion?

Accepted Answer

Winning the National League Championship grants a team a spot in the World Series, which is the pinnacle of Major League Baseball. This victory not only brings prestige but also financial benefits through increased ticket sales and sponsorship opportunities.

Question 4

What is "National League Champion" and why does it matter?

Accepted Answer

National League Champion is a prediction market event currently tracked across 2 platforms (Kalshi, Polymarket). St. Louis Cardinals leads at 51% implied probability, making it the market favorite. Other contenders include St. Louis Cardinals at 51%, Arizona Diamondbacks at 51%, Arizona Diamondbacks at 51%.

Question 5

What is moving the odds on "National League Champion"?

Accepted Answer

St. Louis Cardinals currently leads at 51% implied probability. Behind St. Louis Cardinals, St. Louis Cardinals at 51% and Arizona Diamondbacks at 51% and Arizona Diamondbacks at 51% are the next closest contenders. The 98.7% cross-platform spread suggested platforms were pricing new information differently, creating potential trading opportunities.

Question 6

What are the current odds for "National League Champion" across platforms?

Accepted Answer

Here are the latest odds across Kalshi, Polymarket: St. Louis Cardinals: 3¢ on Kalshi, 99¢ on Polymarket. St. Louis Cardinals: 3¢ on Kalshi, 99¢ on Polymarket. Arizona Diamondbacks: 3¢ on Kalshi, 98¢ on Polymarket. Arizona Diamondbacks: 3¢ on Kalshi, 98¢ on Polymarket. The 98.7% spread across platforms highlights where markets disagree — a gap traders can exploit by buying low on one platform and selling high on another.

Question 7

What does it mean that St. Louis Cardinals is at 51%?

Accepted Answer

A price of 51¢ means the market estimates a 51% probability that St. Louis Cardinals will be the outcome. Buying one share at 51¢ pays out $1.00 if correct — a 96% return — or $0 if wrong. This is the core mechanic of prediction markets: the price directly reflects the crowd's probability estimate.

Platform	Implied %	Yes — Bid / Ask		No — Bid / Ask
Kalshi	2.5%	2¢	3¢	97¢	98¢
Polymarket	98.5%	98¢	99¢	2¢	2¢

Platform	Implied %	Yes — Bid / Ask		No — Bid / Ask
Kalshi	2.5%	2¢	3¢	97¢	98¢
Polymarket	98.5%	98¢	99¢	2¢	2¢

Platform	Implied %	Yes — Bid / Ask		No — Bid / Ask
Kalshi	1.5%	1¢	2¢	98¢	99¢
Polymarket	100.0%	100¢	100¢	0¢	0¢

National League Champion

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Market Rulebook: National League Champion