Will Paris Saint-Germain FC win on 2026-08-23?
Crossbook compares what two exchanges, Polymarket and Kalshi, charge for the same event, and publishes a permanent scored record of its own forecasts under published rules.
Tracked on one venue, with Crossbook's own call on the record.
Crossbook forecast
- 66.0%against a market price of 62.5% at the timeNO
Logged 20 Aug 2026, 22:50 UTC · Brier 0.4356
- Reference class is PSG domestic league matches; their structural superiority in Ligue 1 supports a mid-70s base win rate absent other information.
- Key negative adjustment: this is an early-season match (likely matchday 2-3) only ~5 weeks after the 2026 World Cup final, so PSG's many internationals face a compressed preseason and possible rotation, and the unknown opponent/venue plus the 62.5% market price suggest a tougher-than-average fixture (away or top-half opponent); blended adjustment lands near 66%.
- My 66% vs. the market's 62.5% is a small divergence, plausibly explained by the market pricing specific fixture details (opponent, venue) I cannot see; low-volume sports markets like this are reasonably efficient, so I partially defer rather than anchor purely on the blended base rate.
What would change it: Confirmation that the fixture is away against a top-4 Ligue 1 side, or team news showing mass rotation/absences of PSG players returning from a deep 2026 World Cup run.
Settlement source
Context
Polymarket prices this at 66%. No verified equivalent is currently listed on the other venue, so there is no cross venue comparison on this page.
Volume over the last 24 hours is active, at about $139,238 on the busier venue.
This market has settled. The page is kept as a record of what the market said while the question was open, and of what Crossbook called.
Related markets
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