SimpleFunctions
8 contractsKalshirefreshed 1 min agoCloses Dec 8, 2026 · 213d

Will Samuel Basallo win AL ROTY

Liquidity-weighted aggregate sits at 13% across 8 Kalshi contracts.

Implied probability

13%
0%50%100%

Kalshi

13%

8 contracts

Polymarket

not bound

Cross-venue gap

single venue

24h move

no pin

24h volume

$6K

8 contracts

Closes

Dec 8, 2026

213 days

30-day trend

0%50%100%-30d-3w-2w-1wtodayAggregate: 35% (28 days, 28 points)Aggregate: 35% on 2026-05-08
Aggregate of 8 contracts · 28d

Bracket families

8 clusters across 8 contracts.

These contracts were grouped by title similarity. The headline aggregate combines all clusters; verify the cluster you actually need before quoting a number.

Cluster 1

Will Chase DeLauter win AL ROTY

1 contract$2K

Cluster 2

Will Munetaka Murakami win AL ROTY

1 contract$2K

Cluster 3

Will Kevin McGonigle win AL ROTY

1 contract$1K

Cluster 4

Will Trey Yesavage win AL ROTY

1 contract$500

Cluster 5

Will Kazuma Okamoto win AL ROTY

1 contract$309

Cluster 6

Will Spencer Jones Jr. win AL ROTY

1 contract$125

Cluster 7

Will Lazaro Montes win AL ROTY

1 contract$0

Cluster 8

Will Hagen Smith win AL ROTY

1 contract$0

Analysis

Samuel Basallo's 14% probability reflects market expectations that he will not win the American League Rookie of the Year award in 2026. The market is pricing in competition from other highly-regarded prospects, particularly Kevin McGonigle (40%) and Munetaka Murakami (38%), suggesting Basallo faces significant headwinds despite being in contention. His probability would rise if he demonstrates sustained performance metrics—batting average, on-base percentage, and power numbers—that outpace competing rookies through the season. Conversely, injuries, performance decline, or breakthrough performances by other candidates could lower his odds. The outcome will be determined by year-end statistical comparisons and voting by the Baseball Writers' Association, making mid-season performance data points the key catalyst for probability shifts.

  • McGonigle and Murakami are currently priced nearly 3x higher, indicating market consensus views them as more likely winners
  • Basallo's win probability implies approximately 1-in-7 odds, positioning him outside the top two contenders but not eliminated
  • Year-to-date performance statistics (batting average, slugging percentage, WAR, plate appearances) will be primary determinants of voting consideration
  • Playing time and injury status throughout the season are critical—ROTY voters typically require substantial major league service time
  • BBWAA voting typically weights overall offensive production and defensive performance, not just raw talent or prospect rankings

What moved the line

  • May 7Munetaka Murakami7pp3831¢ · Kalshi
  • May 7Kevin McGonigle5pp3833¢ · Kalshi
  • May 6Kazuma Okamoto5pp27¢ · Kalshi
  • May 2Munetaka Murakami4pp3236¢ · Kalshi
  • May 6Chase DeLauter3pp912¢ · Kalshi

Recently closed in general

These markets stopped trading. Last odds and any captured outcome are shown above — full settlement detail lives at the venue.

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How we compute these odds

SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.

For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.

Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.

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