Us Open NY, U.S.A. Hard Grand Slam Round of 64

Rei Sakamoto vs Frances Tiafoe: AI Prediction | Games, Spread, Aces & Double Faults

Rei Sakamoto

Rank: #157
23%
VS

Frances Tiafoe

Rank: #12
77%
Expected Total Games: 34.7
Predicted Winner: Frances Tiafoe

Why the Model Favors Frances Tiafoe

The factors that drove this prediction, measured in win-probability points.

Overall strength +8.9 Frances Tiafoe
Recent record by level +7.8 Frances Tiafoe
Surface fit +5.9 Frances Tiafoe
Recent form +4.5 Frances Tiafoe
Age +4.4 Rei Sakamoto

Starting from an even matchup, these factors move the model to 77% for Frances Tiafoe. Computed with gradient-based attribution on our neural network, not editorial opinion. How to read this →

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Ranking Trends

Rei Sakamoto

  • Current #157 2026-08-24
  • 3 mo ago #153 2026-05-25
  • 6 mo ago #159 2026-03-02
  • 9 mo ago #187 2025-12-01
  • 12 mo ago #197 2025-08-25

Frances Tiafoe

  • Current #12 2026-08-24
  • 3 mo ago #22 2026-05-25
  • 6 mo ago #22 2026-03-02
  • 9 mo ago #30 2025-12-01
  • 12 mo ago #17 2025-08-25

Player Metrics

Rei Sakamoto

Form Index: 74.4
ELO Rating: 1699.5
Glicko2 Rating: 1679.4
Current Fatigue (minutes): 696.0
Surface Strength:
Hard: 28.4
Clay: 8.8
Grass: 10.1
Serve Rating: 95.8
Return Rating: 87.3

Frances Tiafoe

Form Index: 70.8
ELO Rating: 1929.5
Glicko2 Rating: 1892.5
Current Fatigue (minutes): 174.0
Surface Strength:
Hard: 45.6
Clay: 29.9
Grass: 28.9
Serve Rating: 95.8
Return Rating: 88.0

Recent Matches

Rei Sakamoto
✅ ✅ ✅ ✅ ❌

Frances Tiafoe
✅ ❌ ✅ ✅ ✅

Head-to-Head (Last 2 Seasons)

0
Rei Sakamoto
vs
0
Frances Tiafoe
Hard
0 - 0
Clay
0 - 0
Grass
0 - 0

Key Prediction Insights

At the 2026 US Open in New York, hard court, Round of 64, Frances Tiafoe is the clear favorite against Rei Sakamoto. The model projects Tiafoe to win with 76.67% probability, versus 23.33% for Sakamoto, and expects about 34.68 total games in the match.

Match Analysis

The model’s edge for Tiafoe comes mainly from overall strength and recent results at this level. Overall strength contributes 8.9 percentage points toward Tiafoe, and recent record by level adds 7.8 points. That aligns with Tiafoe’s higher Elo rating of 1929.5 and his top 15 ranking at 12, versus Sakamoto’s Elo of 1699.5 and ranking of 157. Surface fit and recent form also lean toward Tiafoe, adding 5.9 and 4.5 points respectively. Sakamoto does pick up 4.4 points from age in the model, but that is not enough to overcome the others. Looking at the raw numbers, Sakamoto presents a strong serve index at 95.83 and a return index at 87.26, while Tiafoe posts a similar serve index at 95.79 and a slightly higher return index at 88.02. Fatigue is a notable differential. Sakamoto arrives with 696 minutes played in the tournament so far versus Tiafoe’s 174 minutes. Sakamoto’s recent form shows three straight wins at this event, including a five set win in the last round. Tiafoe has mixed results over his last three matches but includes a win at the Open and a deeper run in Cincinnati earlier in the hard court season.

Total Games Predictions

🎾
Expected Total Games in Match 34.7 Most likely outcome: 33 games

📊 Total Games Probability Distribution

Distribution

Probability of each total games outcome

Cumulative Probability (CDF)

Probability of total games ≤ X

Games Spread Predictions

📈
Expected Games Spread (Rei Sakamoto - Frances Tiafoe) -2.5 Most likely spread: -3 (Frances Tiafoe wins 3 more games)

📊 Games Spread Probability Distribution

Distribution

Probability of each games spread outcome

Cumulative Probability (CDF)

Probability of spread ≤ X

Aces and Double Faults Predictions

The aces prediction for this match is 21.27 total, with predicted aces split of 11.60 for Sakamoto and 10.28 for Tiafoe. Expected double faults total 7.27, split 3.46 for Sakamoto and 3.81 for Tiafoe. On medium paced hard courts these figures are consistent with a balance of power serving and return play. Since serve ratings are nearly identical, the per player ace projections show Sakamoto slightly ahead at 11.60 aces versus 10.28 for Tiafoe. This supports the expected double faults and steady service hold pattern.
🎯
Expected Total Aces 21.3 Most likely: 19 aces Per player: Rei Sakamoto 11.6 + Frances Tiafoe 10.3
❌
Expected Total Double Faults 7.3 Most likely: 6 double faults Per player: Rei Sakamoto 3.5 + Frances Tiafoe 3.8

🎯 Aces Probability Distribution

Distribution

Probability of each ace count outcome

Cumulative Probability (CDF)

Probability of aces ≤ X

🎯 Aces by Player

Rei Sakamoto

Expected 11.6 aces

Frances Tiafoe

Expected 10.3 aces

❌ Double Faults Probability Distribution

Distribution

Probability of each double fault count outcome

Cumulative Probability (CDF)

Probability of double faults ≤ X

❌ Double Faults by Player

Rei Sakamoto

Expected 3.5 double faults

Frances Tiafoe

Expected 3.8 double faults

🎯 Match Format Predictions

Tiebreak Likelihood

Probability that any tiebreak is played in this match

54.9% Predicted: Tiebreak likely

Exact Score Distribution BO5

Probability of each set-by-set outcome (Rei Sakamoto's perspective)

0-3 Most likely set score (34.3%)
New to probability charts? Learn how to interpret distribution and CDF curves

Final Prediction

Tiafoe’s edge is driven principally by his superior overall strength and stronger recent results at this level. The key factor to watch will be Sakamoto’s accumulated fatigue and whether his high serve output can offset Tiafoe’s higher Elo and surface fit.

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