Cincinnati Open: Lorenzo Musetti vs Frances Tiafoe
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
- 46.0%against a market price of 50.5% at the timeNO
Logged 21 Aug 2026, 22:56 UTC · Brier 0.2116
- Signal: Cincinnati outdoor hard and the US swing likely favor Tiafoe's serve-plus-first-strike profile and comfort in North America over Musetti's more clay/variety-leaning strengths, so I shade YES-Musetti below even.
- Narrative risk: Musetti's rising pedigree and highlight-reel shotmaking can tempt a favorite-longshot storyline, but on fast hard courts the repeatable edges are usually serve/return and first-ball control rather than aesthetics.
- Time-decay is modest with 7 days to close: the main mover would be injury, withdrawal, draw context, or revealed form; my 0.46 is only slightly below Polymarket's 50.5%, a divergence plausibly explained by market balancing/home-fan flow rather than a large model gap.
What would change it: Reliable news that Tiafoe is injured/withdrawn or that Musetti has clearly superior current hard-court form/ranking would move this estimate upward sharply.
Settlement source
Context
Polymarket prices this at 50%. 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 heavy, at about $580,001 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
Crossbook publishes every forecast it makes, timestamped before the answer is known and scored against the market afterwards. See the public record and the rules it is held to.