MODEL PREDICTION · 2026-09-20
● HARD

Y. Yuan vs D. Back — prediction

Seoul
✗ Missed
YUANWIN PROBABILITYBACK
58%
model prob.
@1.21
odds · 83% impl.
⏱Rest 23d vs 11d◐Hard 37%🎾Serve 58%📈Form 4/10
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◇
49%

Dry air: the ball travels normally.

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: #132 vs #270 (better ranked)

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

›Model 58% vs market 83% → the model sees it as less likely than the odds

›Recent form: 4/10 in recent matches

›More rested: 23d vs opponent's 11d

WATCH FOR

!Returning from a long layoff (23d) — 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.
@1.71
fair odds
−29.2%
expected value
BREAKDOWN · MODEL ANALYSIS

The model makes Y. Yuan the favorite with a 58% win probability, against D. Back's 42% — a tight match, without a wide margin. Converted to odds, that probability is worth about @1.71; the offered odds are around @1.21 (a 83% implied), slightly below the market, so the model is a touch more cautious.

Several factors explain the number: #132 vs #270 (better ranked); performs +5% above baseline (49% career on the surface); model 58% vs market 83% → 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 58%, 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 42 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: Returning from a long layoff (23d) — possible rustiness. This is informational analysis, not a betting recommendation. 18+ · play responsibly.

Analyze today's matches →