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Tennis predictions, September 21, 2026: Sasnovich vs Kasatkina, Rakhimova vs Kudermetova

By The Maiden Desk · September 21, 2026

Every number below was fixed before the match and graded against the official result.

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9 matches are on Monday's card across 3 events, and we have a pick for every one of them. The headline act: Aliaksandra Sasnovich against Daria Kasatkina in the round of 32. Our calls: Kasatkina over Sasnovich, Rakhimova over Kudermetova, Tjen over Parks, Quevedo over Podoroska, Sawangkaew over Korneeva, Gibson over Ferro, and 3 more.

The boldest call on the card: Sawangkaew over Korneeva — the market disagrees with us there.

September 19, 2026 results: 5-6 → how our picks graded, match by match.

Aliaksandra Sasnovich vs Daria Kasatkina

✗ Pick wrongWe got this one wrong. Our final number was 51% on Daria Kasatkina; Aliaksandra Sasnovich won 7-5 6-0.

Pick: Kasatkina

Win probability: 51% Kasatkina · Market: -139 · We call it in 2 sets (60%) · single likeliest score 2-0 (31%)

Monday's Singapore round of 32 pits Aliaksandra Sasnovich against Daria Kasatkina on hard. Daria Kasatkina is searching for form, having lost 3 in a row (3 of the last 10). Aliaksandra Sasnovich is searching for form, having lost 2 in a row (3 of the last 10).

On paper it's close: comparable ratings, comparable serve numbers, small margins everywhere. Little separates them; Kasatkina gets the nod on the finest of margins.

Kamilla Rakhimova vs Polina Kudermetova

✓ Pick rightThis one lands on the correct side of the ledger: 52% on Kamilla Rakhimova, who won 7-6 4-6 7-5.

Pick: Rakhimova

Win probability: 52% Rakhimova · Market: -204 · We call it in 2 sets (60%) · single likeliest score 2-0 (31%)

A spot in the next round is at stake on Monday, when Kamilla Rakhimova goes up against Polina Kudermetova in the Seoul round of 32. Kamilla Rakhimova comes in at 5 wins from the last ten. Polina Kudermetova has won 5 of the last 10.

On paper it's close: comparable ratings, comparable serve numbers, small margins everywhere. A tiebreak or two would surprise nobody, with Rakhimova fractionally more likely to land the big points.

Alycia Parks vs Janice Tjen

Pick: Tjen

Win probability: 52% Tjen · Market: -168 · We call it in 2 sets (61%) · single likeliest score 2-0 (32%)

Monday's Singapore round of 32 pits Alycia Parks against Janice Tjen on hard. Janice Tjen has won 4 of the last 10. Alycia Parks comes in at 4 wins from the last ten.

The underlying stats are tight across the board — this is a matchup decided by a handful of points. This one is close to a coin flip, and the lean toward Tjen is exactly that — a lean.

Kaitlin Quevedo vs Nadia Podoroska

✓ Pick rightWe got this one right. Kaitlin Quevedo was our 55% pick, and won 4-6 6-4 6-2.

Pick: Quevedo

Win probability: 55% Quevedo · Market: -125 · We call it in 2 sets (62%) · single likeliest score 2-0 (35%)

Monday brings the Sao Paulo final: Kaitlin Quevedo against Nadia Podoroska. Kaitlin Quevedo has won 3 in a row and 5 of the last 10 overall. Nadia Podoroska is 4-6 across recent matches.

Neither the serve numbers nor the ratings separate these two by much, which is why our number stays close to even. Quevedo comes in off a compressed schedule; Podoroska comes in off a compressed schedule. Little separates them; Quevedo gets the nod on the finest of margins.

Alina Korneeva vs Mananchaya Sawangkaew

✗ Pick wrongMissed it. We had Mananchaya Sawangkaew at 57%, but Alina Korneeva won 6-4 6-2.

Pick: SawangkaewUpset call

Upset call: the market favors Korneeva; our numbers say Sawangkaew.

Win probability: 57% Sawangkaew · Market: +196 · We call it in 2 sets (61%) · single likeliest score 2-0 (35%)

Monday's Seoul round of 32 pits Alina Korneeva against Mananchaya Sawangkaew on hard. Mananchaya Sawangkaew comes in at 6 wins from the last ten. Alina Korneeva limps in on a 2-match losing skid, just 3 wins in 10.

The underlying stats are tight across the board — this is a matchup decided by a handful of points. Little separates them; Sawangkaew gets the nod on the finest of margins.

Fiona Ferro vs Talia Gibson

✓ Pick rightThis one lands on the correct side of the ledger: 53% on Talia Gibson, who won 6-3 6-3.

Pick: Gibson

Win probability: 53% Gibson · Market: -114 · We call it in 3 sets (42%) · single likeliest score 2-0 (30%)

Monday's Singapore round of 32 pits Fiona Ferro against Talia Gibson on hard. Talia Gibson limps in on a 3-match losing skid, just 3 wins in 10. Fiona Ferro is rolling — 5 straight wins, 9 of 10 in recent play.

Gibson's 63.9% behind the first serve (against 59.5% for Ferro) means break chances should be scarce in one direction. Little separates them; Gibson gets the nod on the finest of margins.

Maja Chwalinska vs Rebecca Sramkova

✓ Pick rightThis one lands on the correct side of the ledger: 54% on Maja Chwalinska, who won 6-4 6-2.

Pick: Chwalinska

Win probability: 54% Chwalinska · Market: -166 · We call it in 2 sets (60%) · single likeliest score 2-0 (33%)

A spot in the next round is at stake on Monday, when Maja Chwalinska goes up against Rebecca Sramkova in the Singapore round of 32. Maja Chwalinska is searching for form, having lost 3 in a row (4 of the last 10). Rebecca Sramkova has won 4 of the last 10.

On paper it's close: comparable ratings, comparable serve numbers, small margins everywhere. This one is close to a coin flip, and the lean toward Chwalinska is exactly that — a lean.

Kristina Mladenovic vs Nao Hibino

✓ Pick rightThis one lands on the correct side of the ledger: 52% on Nao Hibino, who won 7-5 3-6 6-4.

Pick: Hibino

Win probability: 52% Hibino · Market: -413 · We call it in 2 sets (61%) · single likeliest score 2-0 (33%)

A spot in the next round is at stake on Monday, when Kristina Mladenovic goes up against Nao Hibino in the Singapore round of 32. Nao Hibino is searching for form, having lost 2 in a row (4 of the last 10). Kristina Mladenovic limps in on a 2-match losing skid, just 4 wins in 10.

On paper it's close: comparable ratings, comparable serve numbers, small margins everywhere. Little separates them; Hibino gets the nod on the finest of margins.

Elvina Kalieva vs Katie Volynets

✓ Pick rightNailed it. We had Katie Volynets at 62% before the match, and Katie Volynets won 6-3 6-0.

Pick: Volynets

Win probability: 62% Volynets · Market: -249 · We call it in 2 sets (63%) · single likeliest score 2-0 (40%)

A spot in the next round is at stake on Monday, when Elvina Kalieva goes up against Katie Volynets in the Seoul round of 32. Katie Volynets is 7-3 across recent matches. Elvina Kalieva is searching for form, having lost 5 in a row (2 of the last 10).

Katie Volynets is clearly higher-rated on hard — our number puts Volynets around 62%. Expect resistance, but the match-level math tilts clearly toward Volynets.

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Updated Sep 20, 2026, 1:00 AM UTC. Picks are frozen before first serve and graded on the track record page — this page is never edited after the fact.

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