MODEL PREDICTION · 2026-09-21
● HARD

Y. Yuan vs D. Back — prediction

Seoul
YUANWIN PROBABILITYBACK
69%
model prob.
@1.22
odds · 82% impl.
⚔H2H 0–2 Yuan⏱Rest 24d vs 12d◐Hard 37%🎾Serve 58%📈Form 4/10 · 4✗
CONDITIONS OF THE MATCH◆ in the model◇ context
Surface◆
Hard

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

Temperature◇
27°C

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

Humidity◇
41%

Dry air: the ball travels normally.

Wind◇
2 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: #134 vs #272 (better ranked)

›Hard specialist: performs +5% above baseline (49% career on the surface)

›Model 69% vs market 82% → the model sees it as less likely than the odds

›Recent form: 4/10 in recent matches

›More rested: 24d vs opponent's 12d

WATCH FOR

!Coming off 4 losses in a row

!Returning from a long layoff (24d) — possible rustiness

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.
@1.45
fair odds
−16.0%
expected value
BREAKDOWN · MODEL ANALYSIS

The model makes Y. Yuan the favorite with a 69% win probability, against D. Back's 31% — a solid favorite, though Back keeps real chances. Converted to odds, that probability is worth about @1.45; the offered odds are around @1.22 (a 82% implied), slightly below the market, so the model is a touch more cautious.

Several factors explain the number: #134 vs #272 (better ranked); performs +5% above baseline (49% career on the surface); model 69% vs market 82% → the model sees it as less likely than the odds; 4/10 in recent matches.

Read it with perspective. Our probability is calibrated — when the model says 69%, 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 31 out of every 100 times Back 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. Watch out for: Coming off 4 losses in a row; Returning from a long layoff (24d) — possible rustiness. This is informational analysis, not a betting recommendation. 18+ · play responsibly.

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