MODEL PREDICTION · 2026-09-24
● HARD

J. Ostapenko vs T. Preston — prediction

Seoul
OSTAPENKOWIN PROBABILITYPRESTON
65%
model prob.
@1.37
odds · 73% impl.
◐Hard 45%🎾Serve 59%📈Form 6/10
CONDITIONS OF THE MATCH◆ in the model◇ context
Surface◆
Hard

Consistent bounce, medium-fast: neutral conditions, no style favored.

Temperature◇
24°C

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

Humidity◇
67%

Humid air: the ball loses some speed.

Wind◇
4 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.

OUR MODEL'S REASONING

›Ranking: #32 vs #94 (better ranked)

›Model 65% vs market 73% → the model sees it as less likely than the odds

›Recent form: 6/10 in recent matches

Calibrated model probability (~64% out-of-sample accuracy, validated specifically on WTA). Not a guarantee: the model ≈ the market on average, so the odds already capture almost all the edge. 18+ · gamble responsibly.
@1.54
fair odds
−10.8%
expected value
BREAKDOWN · MODEL ANALYSIS

The model makes J. Ostapenko the favorite with a 65% win probability, against T. Preston's 35% — a solid favorite, though Preston keeps real chances. Converted to odds, that probability is worth about @1.54; the offered odds are around @1.37 (a 73% implied), slightly below the market, so the model is a touch more cautious.

Several factors explain the number: #32 vs #94 (better ranked); model 65% vs market 73% → the model sees it as less likely than the odds; 6/10 in recent matches.

Read it with perspective. Our probability is calibrated — when the model says 65%, that outcome happens roughly that percentage of the time, with ~64% out-of-sample accuracy — but being the favorite is not being the winner: roughly 35 out of every 100 times Preston wins. The model also tends to agree with the market, so the odds already capture almost all the edge: don't take it as a sure value. This is informational analysis, not a betting recommendation. 18+ · play responsibly.

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