Challenger · ELO ESTIMATE · 2026-08-21
CLAY

J. Kumstat vs C. H. Tsengprediction

Prague
✓ Correct
KUMSTATWIN PROBABILITYTSENG
58%
Elo prob.
@1.45
odds · 69% impl.
🎾Serve 70%📈Form 10/10 · 15✓
CONDITIONS OF THE MATCHin the modelcontext
Surface
Clay

Slow court, high bounce: longer points, rewards whoever holds up from the baseline.

Temperature
25°C

Warm: the ball flies a little more and fitness counts.

Humidity
41%

Dry air: the ball travels normally.

Wind
9 km/h

Light wind: no noticeable effect.

Surface feeds the model (surface specialization is one of its factors). Weather and altitude are context we publish for you — they do NOT move the probability.

WHAT THE ESTIMATE IS BASED ON

Tour Elo: 1844 vs 1790 — favorite by rating

Challenger tier · 92 matches in the favorite's track record

Elo estimate (not the ATP factor model): these are softer, less-analyzed markets

WATCH FOR

!Soft market: the value edge in Challenger/ITF is NOT proven live — treat it as an estimate, not an opportunity.

Tour Elo estimate (Challenger/ITF markets, not covered by the factor model). The value edge here is unproven live — it's a reference, not a recommendation. 18+ · gamble responsibly.
@1.73
fair odds
−16.3%
expected value
BREAKDOWN · ELO ESTIMATE

The model makes J. Kumstat the favorite with a 58% win probability, against C. H. Tseng's 42% — a tight match, without a wide margin. Converted to odds, that probability is worth about @1.73; the offered odds are around @1.45 (a 69% implied), slightly below the market, so the model is a touch more cautious.

Several factors explain the number: 1844 vs 1790 — favorite by rating; challenger tier · 92 matches in the favorite's track record; these are softer, less-analyzed markets.

Read it with caution. This number does NOT come from the ATP factor model, but from the tour's real Elo: it ranks who is the favorite well, but it is a coarser estimate. Being the favorite is not being the winner: roughly 42 out of every 100 times Tseng wins. And above all, in Challenger/ITF the value edge is not proven live, so treat it as a reference, not an opportunity. Watch out for: Soft market: the value edge in Challenger/ITF is NOT proven live — treat it as an estimate, not an opportunity.. This is informational analysis, not a betting recommendation. 18+ · play responsibly.

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