# Will Leo De Vries play in a game for any team in the MLB before Sep 1, 2026

> Before Nov 1, 2027 leads at 79%, runner-up 69% across 7 winner-take-all outcomes — refreshed 23 min ago.

URL: https://simplefunctions.dev/odds/mlbdebut-ldevries
Updated: 2026-05-28T20:20:10.696Z
Category: sports
Status: active
Closes: 2027-11-01

## Headline

- Leader: Before Nov 1, 2027 at 79%
- Runner-up: Before Nov 1, 2026 at 69%
- Outcomes: 7 (winner-take-all)
- Venue: Kalshi (7 contracts)
- 24h volume: $18

## Bound contracts (7)

| Outcome | Price | 24h | Volume | Venue | Slug |
|---|---|---|---|---|---|
| Before Nov 1, 2027 | 79¢ | +2pp | $9 | kalshi | /markets/will-leo-de-vries-play-in-a-game-for-any-team-in-t-kalshi-kxmlbdebut-ldevries-27nov01 |
| Before Nov 1, 2026 | 69¢ | +16pp | $0 | kalshi | /markets/will-leo-de-vries-play-in-a-game-for-any-team-in-t-kalshi-kxmlbdebut-ldevries-26nov01 |
| Before May 1, 2027 | 66¢ | −9pp | $0 | kalshi | /markets/will-leo-de-vries-play-in-a-game-for-any-team-in-t-kalshi-kxmlbdebut-ldevries-27may01 |
| Before Oct 1, 2026 | 47¢ | −2pp | $0 | kalshi | /markets/will-leo-de-vries-play-in-a-game-for-any-team-in-t-kalshi-kxmlbdebut-ldevries-26oct01 |
| Before Sep 1, 2026 | 27¢ | −17pp | $0 | kalshi | /markets/will-leo-de-vries-play-in-a-game-for-any-team-in-t-kalshi-kxmlbdebut-ldevries-26sep01 |
| Before Aug 1, 2026 | 20¢ | −18pp | $0 | kalshi | /markets/will-leo-de-vries-play-in-a-game-for-any-team-in-t-kalshi-kxmlbdebut-ldevries-26aug01 |
| Before Jul 13, 2026 | 14¢ | −2pp | $9 | kalshi | /markets/will-leo-de-vries-play-in-a-game-for-any-team-in-t-kalshi-kxmlbdebut-ldevries-26jul13 |

## 30-day trajectory

| Day | Before Nov 1, 2027 | Before Nov 1, 2026 | Before May 1, 2027 |
|---|---|---|---|
| 2026-05-09 | 2 | 2 | 2 |
| 2026-05-14 | 9 | 9 | 9 |
| 2026-05-21 | 82 | 7 | 3 |
| 2026-05-25 | 77 | 46 | 17 |
| 2026-05-28 | 72 | — | 64 |

_20 days of price history captured. Each row is the daily mean of intraday 5-min captures._

## What moved the line

- 2026-05-27 · Before May 1, 2027 +44pp 29→73¢ · kalshi
- 2026-05-21 · Before May 1, 2027 −29pp 32→3¢ · kalshi
- 2026-05-28 · Before Aug 1, 2026 −18pp 29→11¢ · kalshi
- 2026-05-28 · Before Sep 1, 2026 −17pp 20→3¢ · kalshi
- 2026-05-26 · Before Jul 13, 2026 −16pp 30→14¢ · kalshi

## Methodology

Headline is the **leader's price**, not an arithmetic mean — averaging disjoint winner-take-all outcomes is meaningless. Per-outcome prices come from the venue's last-traded mid; cross-venue values are simple means across contracts on each venue.

## How to use this data

- HTML: https://simplefunctions.dev/odds/mlbdebut-ldevries
- JSON: https://simplefunctions.dev/api/public/odds?slug=mlbdebut-ldevries

## License

CC-BY-4.0. Attribute "SimpleFunctions" with a link to https://simplefunctions.dev. See https://simplefunctions.dev/legal for terms.