Rei Sakamoto vs Ji Sung Nam — Shanghai Round of 32
JPN1
Sakamoto R.
Ji Sung Nam defeated Rei Sakamoto in the Round of 32 at the Shanghai tournament, winning 7-6, 6-4 on hard courts. Ji Sung Nam hit 3 aces and 0 double faults, while Rei Sakamoto had 7 aces and 2 double faults. Ji Sung Nam converted 60% of break points and did not concede a service break, while Rei Sakamoto converted 40% of break points and had 2 service breaks.
Generated automatically from Umpiry match data.
Key context
- Match story: Ji Sung Nam edged Rei Sakamoto in two tight sets (7–6 6–4).
Head to head
No previous meetings on record.
Statistics
This seasonAverages over each player's completed matches in the selected window (34 vs 8). ATP, WTA & Challenger.
Clutch
Under pressurePerformance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Win Probability
Pre-match · updated 10:50 UTC50–58%
58–67%
67–80%
80%+
Clear favourite · Sakamoto R. clearly ahead, but no certainty
Calibrated model · 63% favourite accuracy (2025–26, out-of-sample). Probability is a statistical estimate, not a certainty. How it works.
Umpiry Score
Pre-matchThe Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.
Freshness
Recent loadSakamoto R.: 1 day rest · 2 matches, 57 games (7d) · Sung Nam J.: 1 day rest · 3 matches, 64 games (7d). Higher means fresher. About