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Court Shark Tennis Desk

Tjen vs Dart Prediction: Guangzhou 2026 Round of 16

Dart's recent form and return record support Court Shark's narrow pick, while Tjen's ranking and stronger serve support the market's opposing view.

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Harriet Dart faces Janice Tjen in Guangzhou's round of 16, with Court Shark's model giving Dart a 52% chance. Her recent results and return record support that narrow edge; Tjen's ranking and stronger service record support the market's opposing view.

A quarterfinal place tests Dart's recent form

Court Shark's model puts Harriet Dart 18 percentage points above the market, a substantial disagreement about her chances against Janice Tjen in Guangzhou's round of 16. The favorite changes with the forecast. Dart's recent results offer a clear argument for the model's reading, although they do not erase Tjen's advantages elsewhere in the matchup.

Wednesday's winner advances to the quarterfinals on hard courts, where Dart had recently recorded the better results. Dart went 8-2 across her latest hard-court matches, while Tjen went 5-5 over the same number of appearances on the surface. Dart also entered on a three-match winning run. For her, this is a chance to extend that run against a higher-ranked opponent; for Tjen, it is an opportunity to follow her opening victory with another.

Model and market on Harriet Dart

Article snapshot, Oct 27, 2026 · Not live

Harriet Dart's chance as the market consensus priced it from the opening line, next to the Court Shark model.

Harriet Dart's chance to win
ReadingHarriet DartJanice Tjen
Opening consensus32%68%
Latest consensus34%66%
Court Shark model52%48%
Source: Court Shark model and pre-match market consensus.

Dart's return record meets Tjen's stronger serve

The rankings support Tjen's side. She stood at No. 46, compared with Dart at No. 117, a meaningful contrast with the recent results favoring the British player. That provides an argument consistent with the market's preference, though prices cannot establish why the market favors her.

The service records point the same way. Over the past year on hard courts, Tjen held 71% of her service games, while Dart held 66%. My reading is that Tjen has the better foundation for protecting a lead, provided her serve holds up against the stronger return record across the net.

Dart broke in 47% of her return games over that period, compared with Tjen's 26%. That is the clearest statistical support for the model's pick: Dart's results were backed by frequent breaks, rather than a service advantage. Neither player had previously faced the other, so there was no direct meeting to test how those contrasting records might translate to this matchup.

Recovery and tight sets could favor a different result

The recent schedule introduces a competing consideration. Dart played six matches in the past fortnight, while Tjen played four, so Dart's better run also came with the heavier workload. Tjen, however, played the day before this match, whereas Dart had an intervening day without a match. Neither schedule alone establishes a physical disadvantage, but recovery could determine whether Dart sustains the return pressure suggested by her record.

Tiebreaks offer Tjen another route. She won 27 of 42 career tiebreaks, evidence that supports her chances if service games dominate and opportunities to break become scarce. That is a career record, not a direct forecast for this meeting. The concrete test is whether Dart can create breaks often enough to keep Tjen's stronger service record from turning sets into narrow finishes.

The prediction

Court Shark's model narrowly favors Dart with a 52% win probability, while the market gives her 34%. The disagreement is real. Dart's form and return results support a close contest, while Tjen's ranking and service record provide credible evidence for the opposing pick.

Court Shark's AI analyst picks Tjen rather than the model's choice, Dart. Tjen's stronger service record provides a statistical argument consistent with that selection, though the analyst's pick does not establish which factor decided its choice. The scoreline forecast has a median total of 21 games.

The middle half of forecast outcomes runs from 18 to 28 games, leaving room for either a compact result or a longer match. A deciding set is not required for this to be close. Dart's return games against Tjen's serve are the most revealing place to test the competing forecasts.

How long it could go

Article snapshot, Oct 27, 2026 · Not live

A 58% chance the match lasts 18 to 28 games; 21 is the middle of the range.

Chance of each total number of games in the match
Total gamesChance
130.6%
141.7%
153.8%
166.0%
178.2%
188.6%
198.3%
207.5%
215.4%
226.7%
234.4%
241.8%
253.6%
264.0%
273.5%
283.9%
294.1%
303.9%
313.8%
323.3%
332.1%
341.6%
351.6%
360.8%
380.3%
Source: Court Shark model and match data.

Explore this matchup

Compare both players side by side: recent results, surfaces, serve and return.

Player comparison

Article snapshot, Oct 27, 2026 · Not live

Each measure on the same scale: recent wins, wins on this surface, head-to-head wins and the model's chance.

Player comparison
MeasureHarriet DartJanice Tjen
Wins, last 10 matches80% (8-2)50% (5-5)
Wins, last 10 on hard80% (8-2)50% (5-5)
Model win probability52%48%
Source: Court Shark model and match data.

Recent form

Article snapshot, Oct 27, 2026 · Not live

Each player's most recent completed matches, up to 10, oldest on the left.

Recent results by player, oldest first
PlayerDateResultOpponentScoreEvent
Harriet DartSep 27, 2026WTiphanie Fiquet6-2 6-3Beijing
Harriet DartSep 29, 2026WYe Xin Ma6-3 6-2Beijing
Harriet DartOct 1, 2026WYihan Qu6-2 6-7(5) 7-5Beijing
Harriet DartOct 3, 2026LIva Jovic6-2 3-6 3-6Beijing
Harriet DartOct 17, 2026WRina Saigo6-3 6-1WTA Osaka
Harriet DartOct 18, 2026WAoi Ito6-3 6-7(6) 6-3WTA Osaka
Harriet DartOct 19, 2026LTalia Gibson5-7 6-7(6)WTA Osaka
Harriet DartOct 24, 2026WCheuk Ying Shek5-7 7-6(5) 6-1WTA Guangzhou
Harriet DartOct 25, 2026WMei Yamaguchi6-2 6-1WTA Guangzhou
Harriet DartOct 26, 2026WTatiana Barkova6-4 2-6 6-2WTA Guangzhou
Janice TjenSep 1, 2026LMirra Andreeva2-6 2-6US Open
Janice TjenSep 13, 2026WDarja Vidmanova7-6(6) 6-2Guadalajara
Janice TjenSep 16, 2026LSloane Stephens6-7(4) 6-7(3)Guadalajara
Janice TjenSep 30, 2026WAnhelina Kalinina2-6 7-5 6-4Beijing
Janice TjenOct 2, 2026LDiana Shnaider0-6 4-6Beijing
Janice TjenOct 12, 2026WAoi Ito6-3 6-1Wuhan
Janice TjenOct 14, 2026WDaria Snigur7-5 6-3Wuhan
Janice TjenOct 15, 2026LAnn Li1-6 6-7(1)Wuhan
Janice TjenOct 19, 2026LAshlyn Krueger4-6 4-6WTA Osaka
Janice TjenOct 27, 2026WPolina Kudermetova6-2 6-2WTA Guangzhou
Source: Court Shark model and match data.

Win rate by surface

Article snapshot, Oct 27, 2026 · Not live

Share of matches won on each surface across each player's last 50 matches with full statistics.

Win rate by surface
SurfaceHarriet DartJanice Tjen
Hard68% (30-14)49% (18-19)
ClayNo matches33% (2-4)
Grass17% (1-5)29% (2-5)
Source: Court Shark model and match data.

Serve and return on hard courts

Article snapshot, Oct 27, 2026 · Not live

How often each player held serve and broke serve on hard over their last 50 matches with full statistics, against the tour's all-years average on the surface.

Hold and break rates on hard
MeasureHarriet DartJanice TjenTour average, all years
Service games held65%72%63%
Return games broken47%26%37%
Matches in sample4437
Source: Court Shark model and match data.

Model win probability

Article snapshot, Oct 27, 2026 · Not live

The Court Shark model's chance for each player to win this match.

Model win probability by player
PlayerWin probabilityRecent form (last 10)
Harriet Dart52%8-2
Janice Tjen48%5-5
Source: Court Shark model and match data.

Ways to win

Article snapshot, Oct 27, 2026 · Not live

Every way the match can finish. The likeliest single result is Harriet Dart in straight sets (34%).

Chance of each final set score
ResultChance
Harriet Dart wins 2-034%
Harriet Dart wins 2-118%
Janice Tjen wins 2-118%
Janice Tjen wins 2-030%
Source: Court Shark model and match data.

Service games held: where they stand

Article snapshot, Oct 27, 2026 · Not live

Each dot is one of the WTA top 100 with enough matches in the last 52 weeks. Harriet Dart ranks ahead of 1 of 64; Janice Tjen is 30th of 64.

Service games held, last 52 weeks, against the WTA top 100
PlayerService games heldPlace
Harriet Dart56.5%Ahead of 1 of 64
Janice Tjen69.9%30th of 64
Field median69.5%
Field best (Elena Rybakina)83.0%1st
Source: Court Shark model and match data.

Two years of form

Article snapshot, Oct 27, 2026 · Not live

Each player's pre-match Elo rating since Dec 28, 2024. Latest: Harriet Dart 1694 (Oct 25, 2026), Janice Tjen 1693 (Oct 19, 2026).

Pre-match Elo rating over the last two years
PlayerStart of windowTwo-year peakLatest
Harriet Dart1589 (Dec 28, 2024)1699 (Oct 19, 2026)1694 (Oct 25, 2026)
Janice Tjen1500 (Feb 26, 2025)1815 (Jan 7, 2026)1693 (Oct 19, 2026)
Source: Court Shark model and match data.
Explore this matchup

Court Shark win probabilities are statistical estimates, not advice. No outcome is guaranteed.

Methodology and sources

How we build model estimates and where our information comes from.

Model estimates and observed results

The win probabilities come from the Court Shark match model, trained on completed ATP and WTA matches. A probability says how often a player in this position wins, not that one result will happen. The model's number for a match is recorded before play and never changed afterwards, so it can be checked against the result.

Sources and citations

Results, scores, rankings and serve statistics come from the Court Shark match database. The market consensus is the pre-match price for each player converted to a probability. Figures in this article are a snapshot taken when it was written.

Limitations

Serve and return rates count only matches with full serve statistics, which are sparser for Challenger and lower-level events, and the tour average they are compared with covers every year on record. Head-to-head records count every meeting with a recorded winner, walkovers and retirements included. Charts and tables are a snapshot and do not update after publication.

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