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MODEL PREDICTION · 2026-07-13

J. De Jong vs V. Gaubas — prediction

JONGWIN PROBABILITYGAUBAS
56%
model prob.
@1.47
odds · 68% impl.
H2H 1–0 Jong🌡22° · 82% humRest 12d vs 4d🎾Serve 61%📈Form 7/10
THE MODEL'S REASONING

Ranking: #73 vs #129 (better ranked)

Recent form: 4/10 in recent matches

Model 56% vs market 68% → the model sees it as less likely than the odds

Calibrated model probability (~65% out-of-sample accuracy). Not a guarantee: the model ≈ the market on average, so the odds already capture almost all the edge. 18+ · gamble responsibly.
@1.77
fair odds
−17.1%
expected value
HOW EACH FACTOR MATTERS
Level (Elo/ranking)▸ Jong●●●
De Jong is ranked #73 vs #129 and rising (+29 vs -5 trend); Elo gap (1882 vs 1826) backs the higher ranking.
Form▸ Jong●●
De Jong is 7-3 in his last 10 with a win over Khachanov (Elo 1915); Gaubas is 4-6 with no quality wins.
Rest▸ Jong●●
De Jong has 12 days of rest vs Gaubas's 4 days and 3 matches in 14 days, raising fatigue risk for the opponent.
Serve/return▸ Gaubas
Gaubas serves better (63% vs 61%), while De Jong returns better (40% vs 35%) — the edges largely cancel out.
Weather▸ Jong
82% humidity and warm 21°C air slow the ball, favoring the better returner, De Jong (40% vs 35%).
Head-to-head▸ Jong
De Jong won their only prior meeting in 2025, though the sample is too small to weigh heavily.
Value= Even●●●
Model gives 50% vs a 68% market implied probability at 1.47 odds — EV is -26.5%, no edge on the favorite.
RANKING AND ELO GAP

De Jong holds a clear structural edge on paper: he is ranked #73 against Gaubas's #129, and his ranking trend is sharply positive (+29) while Gaubas is sliding (-5). The Elo gap (1882 vs 1826) reinforces this, suggesting De Jong has been performing at a higher level over a broader sample of matches, not just recently.

This gap is the single most reliable signal in the data set since it draws on a large body of results rather than a handful of recent matches, and it points consistently toward De Jong.

FORM, FATIGUE AND RECOVERY

De Jong's last 10 matches (7-3) include a notable win over Khachanov (Elo 1915), evidence of an ability to compete with elite opponents. Gaubas, by contrast, is 4-6 over the same span with no quality wins logged, suggesting a rougher recent stretch.

Scheduling adds a further wrinkle: De Jong arrives with 12 days of rest, while Gaubas has played 3 matches in the last 14 days and comes in on just 4 days off. That workload difference can matter in the closing stages of a tight match, where accumulated fatigue tends to show up in shot quality and movement.

SERVE, RETURN AND CONDITIONS

The serve/return picture is close and largely offsetting: Gaubas serves slightly better (63% vs 61%), but De Jong returns better (40% vs 35%). Neither is a decisive advantage on its own. The baseline numbers lean toward Gaubas (40% vs 31%), suggesting he may be the more comfortable player in extended rallies.

The listed conditions — 21°C, 82% humidity, only 6 km/h wind — describe a heavy, slow-playing atmosphere that tends to lengthen points and reduce the impact of a big serve. In that context, De Jong's return numbers carry a bit more weight than Gaubas's serve numbers, though this is a secondary factor next to the ranking and form gaps.

HONEST VALUE READ

The model rates this match a true 50-50 coin flip, while the market prices De Jong at 68% implied probability (odds of 1.47). That gap produces a expected value of -26.5% on the favorite — a clear signal that the market is pricing in more certainty than the data supports.

Being the favorite is not the same as offering value here: even with De Jong holding real edges in ranking, form and rest, the price already reflects those advantages and then some. On this evidence, backing the favorite at these odds is not a value bet — it is paying a premium for a result the model does not see as more likely than a coin toss.

Impact and analysis from real match data (Elo, form, head-to-head, rest, surface vs baseline, weather, altitude). The model ≈ the market on average; the odds already capture almost all the edge. 18+ · gamble responsibly.

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