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Predictions graded

Akira Santillan #309Australia0Jie Cui #448China2

Sets 4-6 · 3-6Fri 23 Oct 2026, 07:00 Predictions gradedQuarter-FinalHard

Predictions8–189%

Edges2–250%

Player Profiles

Ranking advantageAkira Santillan · 139 places

Akira Santillan

Australia

Santillan, 29, reached a career-high No. 144 in November 2017. ITF lists grass as his preferred surface.

Current ranking: #309
Peak ranking: #144 · 2017
Current age: 29
Preferred surface: I.hard
Hand: Right handed
Height: 180 cm

Jie Cui

China

China's Cui was born on 24 January 1998. Public profile data identifies a career-best singles ranking of No. 280 in January 2025; no reliable preferred-surface information was found.

Current ranking: #448
Peak ranking: #280 · 2025
Current age: 28
Preferred surface: I.hard
Hand: Right handed
Height: 183 cm

Quick Take

Pre-match view

Context last updated 22 Oct 2026, 20:39 · Europe/Bucharest

Cui is the narrow favourite — better second-serve and return numbers, plus a two-tie-break win over second seed Wu — but Santillan's serve (6.5 aces a match, 70.7% of first-serve points) keeps it close.

Cui at 1.5 for the match asks too much; two prices hold a small edge: Santillan to win at 2.4 and Santillan to win 2-0 at 4.0.

Context

Cui's 7-6(4) 7-6(7) win is the strongest result of either player's week: he beat an opponent ranked 342 places above him and did it without conceding a set. It matters for this fixture because Santillan's two wins came against a qualifier and a seeded player outside the top 200, while Cui has already handled a top-110 opponent in two pressure sets. The counterweight is that both sets were decided by a handful of tie-break points, and Cui had won only two of his previous eight matches before arriving in Guangzhou, so one tight win over a compatriot is limited evidence of a sustained upgrade.
- Cui beat Wu 7-6(4) 7-6(7) in the Guangzhou Nansha round of 16
- Wu was the tournament's second seed and is ranked No. 106 against Cui's No. 448
- Cui did not lose a set in the win
ConfirmedSources checked 22 Oct 2026, 20:37 · Europe/Bucharest
The 6-4 6-4 win over the eighth seed came after a three-set first round and a quarter-final at Wuning 3 seven days earlier, so Santillan arrives with two weeks of winning hard-court tennis rather than a single good day. Beating a player ranked 76 places above him in straight sets also separates this from his earlier losses to top-250 opposition this autumn. The limitation is that No. 309 is well below the No. 144 he reached in 2017, and the extra set in the first round leaves him with five sets played this week to Cui's four.
- Santillan beat eighth seed Broady 6-4 6-4 in Guangzhou
- The Guangzhou quarter-final is his fourth at Challenger level in 2026
- He beat Yaroslav Demin 4-6 6-4 6-3 in the first round after losing the opening set
- He reached the Wuning 3 quarter-finals the previous week
ConfirmedSources checked 22 Oct 2026, 20:37 · Europe/Bucharest
Santillan's holding pattern rests on the first serve: 68.8% in, 70.7% of those points won and 6.5 aces a match across 15 hard-court matches to 22 October 2026. When the first ball misses, the drop is steep — 49.2% of second-serve points won in the same sample. Cui's return numbers are solid rather than overwhelming (36.8% of return points across 14 matches), so the second serve may not be punished as heavily as that split suggests.
- 15 hard-court matches tracked to 22 October 2026, with a 7-8 record.
- 68.8% of first serves in (682 of 991).
- 70.7% of first-serve points won (482 of 682); 49.2% of second-serve points won (152 of 309).
- 6.5 aces and 2.5 double faults per match across the 15 matches.
Cui's 14 hard-court matches from 11 August to 22 October 2026 read seven 2-0 wins, four 0-2 defeats and three 1-2 defeats, at a 22.9-game average. His wins have come cleanly, and four of his seven losses also finished inside two sets. The counterpoint is that Santillan's 15-match sample contains five 2-0 wins and five 0-2 losses, so straight sets is a habit on both sides of the net.
- 14 hard-court matches tracked from 11 August to 22 October 2026.
- Scorelines: seven 2-0 wins, four 0-2 losses and three 1-2 losses.
- Total games average 22.9 and total sets average 2.21.

BetBugs edges

Compare BetBugs' chances with the market's.

Positive edges · 2

Other edges · 2

The published chance does not exceed the market's implied chance.

Set 2 WinnerwonUncertainty band: Slight lean

Jie Cui

1.55fair 1.79

BetBugs 56% · Market 64.5%

−8.5ppshort

Cui's second-set numbers are the strongest split in either player's set evidence.

BetBugs probabilities

How likely BetBugs thought each outcome was.

Result1 of 1 landed

Signal quality Medium · Uncertainty band Slight lean · Not priced
The read
Cui's better second-serve and return numbers plus the win over Wu make him a narrow favourite.
- Hard-court record 7-7; 51.4% games won and 50.6% points won over 14 matches.
- Second-serve points won 53.3% and return points won 36.8%.
- Beat second seed Yibing Wu 7-6(4) 7-6(7) in the round of 16.
- Set1 wins 8-6 and set2 wins 9-5 on hard courts.
BetBugs · Match WinnerwonJie CuiEstimated chance55%

Games2 of 3 landed

Signal quality Medium · Uncertainty band Lean · Not priced
The read
Straight-set finishes are the most common outcome in both players' tracked hard-court records.
- 21 of 29 tracked hard-court matches finished in two sets.
- Santillan 10 of 15 and Cui 11 of 14 were straight-set finishes.
- Cui's seven hard-court wins were all 2-0.
BetBugs · Total GameswonUnder 22.5Estimated chance58%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
Cui's second sets run longer than Santillan's, pushing the combined average above 9.5.
- Combined set2 total-games average 9.85.
- Santillan's set2 average total 9.13; Cui's 10.57.
- Cui had three set2 tie-breaks in 14 hard-court matches.
BetBugs · Set 2 Total GameslostOver 9.5Estimated chance54%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
The average first set sits just above 9.5 games, with enough 6-4 and 7-5 sets to favour a higher total.
- Combined set1 total-games average 9.73.
- Santillan set1 average 4.67-4.93; Cui 5.00-4.86.
- Santillan had one set1 tie-break in 15; Cui two in 14.
BetBugs · Set 1 Total GameswonOver 9.5Estimated chance53%

Sets3 of 3 landed

Signal quality Medium · Uncertainty band Strong lean · Not priced
The read
Most tracked matches for both players ended in straight sets, and Cui's wins have all been 2-0.
- 21 of 29 tracked hard-court matches finished in two sets.
- Cui's seven hard-court wins in the sample were all 2-0.
- Santillan had 10 straight-set finishes in 15 matches.
BetBugs · Total SetswonUnder 2.5Estimated chance65%
Signal quality Medium · Uncertainty band Slight lean · Market price 1.55
The read
Cui's second-set numbers are the strongest split in either player's set evidence.
- Hard-court set2 record 9-5; set2 games average 5.71-4.86.
- Set2 win rate 64.3% in the 14-match hard-court sample.
- Return points won 36.8%.
BetBugs · Set 2 WinnerwonJie CuiEstimated chance56%
Signal quality Medium · Uncertainty band Slight lean · Market price 1.60
The read
Cui has the better first-set record and has started recent matches strongly.
- Hard-court set1 record 8-6; set1 games average 5.00-4.86.
- Won the opening set in four of his last six completed matches.
- Second-serve points won 53.3%.
BetBugs · Set 1 WinnerwonJie CuiEstimated chance55%

Match stats1 of 1 landed

Signal quality Medium · Uncertainty band Strong lean · Not priced
The read
Most sets in the samples were settled without a tie-break.
- 22 of 29 tracked hard-court matches had no tie-break.
- Santillan had one set1 and one set2 tie-break in 15 matches.
- Cui had two set1 and three set2 tie-breaks in 14 matches.
BetBugs · Tiebreak in MatchwonNoEstimated chance73%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
The combined double-fault rate is above 3.5, driven mainly by Santillan.
- Santillan averages 2.5 double faults per match; Cui 1.4.
- Additive average 3.9.
- Santillan has 37 double faults in 15 hard-court matches.
BetBugs · Total Double Faultsnot gradableOver 3.5Estimated chance54%
Signal quality Low · Uncertainty band Slight lean · Not priced
The read
The two players' combined ace rate sits just under 11.5.
- Santillan averages 6.5 aces per match; Cui 4.6.
- Additive average 11.1, below the 11.5 mark.
- Cui has 65 aces in 14 hard-court matches.
BetBugs · Total Acesnot gradableUnder 11.5Estimated chance53%

Previous match context available

Akira Santillan

7W 8L

6-4 6-4#233Liam Broady 4-6 6-4 6-3#614Yaroslav Demin

6-7(3) 6-1 6-4#478Keisuke Saitoh

6-3 6-3#614Yaroslav Demin

6-3 3-6 7-6(5)#449Luca Castelnuovo

6-2 6-4#207Luka Pavlovic

6-1 2-6 6-4#174Alex Bolt

6-3 6-0—Kaigaoge Kang

6-4 7-6(4)#172Pavel Kotov

7-5 6-3#893Yaojie Zeng

6-4 6-4#180Bernard Tomic

6-4 4-6 6-1#221Ilya Ivashka

6-2 6-3#388Omar Jasika

6-3 6-4#619Sanhui Shin

6-4 6-1#404Antoine Ghibaudo

Jie Cui

7W 8L

7-6(4) 7-6(7)#106Yibing Wu 6-2 6-4#287Yu Hsiou Hsu

6-4 7-5#67Martin Landaluce

6-3 7-5#296Fajing Sun

4-6 7-6(3) 7-6(5)#116Aleksandar Vukic

6-4 6-4#38Botic Van De Zandschulp

6-4 6-1#65Daniel Altmaier

6-1 6-7(2) 6-4#54Adolfo Daniel Vallejo

4-6 6-4 6-4#187Nicolai Budkov Kjaer

7-6(3) 6-4#280Yi Zhou

7-5 6-4#296Fajing Sun

6-3 6-4#551James Kent Trotter

6-2 4-6 7-5#397Aziz Dougaz

6-4 6-2#327Petr Bar Biryukov

6-3 6-4#511Aziz Ouakaa

Stat Battle

Last 15 match performance, compared side by side.

ASAkira SantillanSantillan

Last 15

2–5

9 core stats · 2 even

Jie CuiCuiJC

Jie Cui carries the stronger recent form — Akira Santillan's route runs through serve.

Serve · 2–2 · 1 even

1st Serve In15/15 · 14/1568.8%+2.5pp66.3%

1st Serve Won15/15 · 14/1570.7%—70.2%

2nd Serve Won15/15 · 14/1549.2%+4.1pp53.3%

Aces / Match15/15 · 14/156.5+1.94.6

Double Faults / Match15/15 · 14/152.51.1 fewer1.4

Return · 0–1

Return Pts Won15/15 · 14/1535.5%+1.3pp36.8%

Pressure · 0–2

Break Pts Converted15/15 · 14/1541.9%+4.9pp46.8%

Break Pts Saved15/15 · 14/1562.0%+1.2pp63.2%

Points · 0–0 · 1 even

Total Pts Won15/15 · 14/1549.9%—50.6%

Serve · 2–2 · 1 even

68.8%1st Serve In15/15 · 14/15+2.5pp66.3%

70.7%1st Serve Won15/15 · 14/15—70.2%

49.2%2nd Serve Won15/15 · 14/15+4.1pp53.3%

6.5Aces / Match15/15 · 14/15+1.94.6

2.5Double Faults / Match15/15 · 14/151.1 fewer1.4

Return · 0–1

35.5%Return Pts Won15/15 · 14/15+1.3pp36.8%

Pressure · 0–2

41.9%Break Pts Converted15/15 · 14/15+4.9pp46.8%

62.0%Break Pts Saved15/15 · 14/15+1.2pp63.2%

Points · 0–0 · 1 even

49.9%Total Pts Won15/15 · 14/15—50.6%

Akira Santillan

Jie Cui

Quick Take

Context

BetBugs edges

Akira Santillan

Akira Santillan 2-0

Jie Cui

Jie Cui

Result1 of 1 landed

Games2 of 3 landed

Sets3 of 3 landed

Match stats1 of 1 landed

Akira Santillan

Jie Cui

Stat Battle