# Will J.J. McCarthy be starting quarterback for Minnesota in Week 1

> Liquidity-weighted aggregate at 50% across 2 contracts — refreshed 45 min ago.

URL: https://simplefunctions.dev/odds/startingqbweek1
Updated: 2026-07-27T06:20:49.482Z
Category: general
Status: active
Closes: 2026-09-15

## Headline

- Probability: 50% (liquidity-weighted across 2 contracts)
- Venue: Kalshi (2 contracts)
- 24h volume: $380

## Bound contracts (2)

| Outcome | Price | 24h | Volume | Venue | Slug |
|---|---|---|---|---|---|
| Kyler Murray | 88¢ | ±0 | $233 | kalshi | /markets/will-kyler-murray-be-starting-quarterback-for-minn-kalshi-kxstartingqbweek1-26sep15min-kmurray1 |
| J.J. McCarthy | 11¢ | +1pp | $147 | kalshi | /markets/will-jj-mccarthy-be-starting-quarterback-for-minne-kalshi-kxstartingqbweek1-26sep15min-jmccarthy9 |

## 30-day trajectory

| Day | Aggregate |
|---|---|
| 2026-06-27 | 48 |
| 2026-07-13 | 44 |
| 2026-07-20 | 49 |
| 2026-07-26 | 49 |

_30 days of price history captured. Each row is the daily mean of intraday 5-min captures._

## What moved the line

- 2026-07-24 · Kyler Murray +4pp 84→88¢ · kalshi
- 2026-07-22 · J.J. McCarthy +4pp 9→13¢ · kalshi
- 2026-07-22 · Kyler Murray −3pp 87→84¢ · kalshi

## Analysis

This market reflects a 32% probability that J.J. McCarthy starts for the Minnesota Vikings in their Week 1 game of the 2026 NFL season. McCarthy, a second-year quarterback, competes with strong alternatives: Kyler Murray is priced at 82% to start, suggesting he is the clear favorite, while Max Brosmer at 5% represents a backup option. The wide gap between McCarthy and Murray reflects uncertainty around Minnesota's quarterback decision heading into the offseason. The probability will be influenced by factors such as McCarthy's performance during training camp and preseason, any injuries sustained by competing quarterbacks, and the Vikings' evaluation of roster needs and cap constraints. The market will likely shift significantly once preseason games begin and coaches make public statements about their starting lineup, with the Week 1 game itself serving as the ultimate resolution event in September 2026.

### Key factors

- McCarthy's completion percentage, yards, and touchdown-to-interception ratio during 2025 season compared to historical rookie and second-year QB performance
- Kyler Murray's contract status, injury history, and publicly stated comments from Vikings coaching staff about their quarterback plans
- Training camp and preseason performance metrics (completion %, efficiency ratings) for McCarthy relative to competing candidates
- Any reported trades, free agent signings, or draft acquisitions by Minnesota at the quarterback position between now and August 2026
- Injury reports and roster decisions affecting the top three candidates, particularly any changes to Murray's status or availability

## Methodology

Probability is **liquidity-weighted** across all bound Kalshi/Polymarket contracts: Σ(price × volume) ÷ Σ(volume). 30-day trajectory uses the daily mean of intraday 5-min captures. 24h delta = today's mean − yesterday's mean. Movement events are ≥3pp daily moves in the last 7 days.

## How to use this data

- HTML: https://simplefunctions.dev/odds/startingqbweek1
- JSON: https://simplefunctions.dev/api/public/odds?slug=startingqbweek1

## License

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