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Model picks & player props
Sloane Stephens
VS
Marta Kostyuk

Sloane Stephens vs Marta Kostyuk Picks & Predictions

Model updated Sep 7, 2:52AM UTC

We checked every price on this game against our own numbers. The green ones are the bets worth more than they should be.

Tennis
Wed 2 Sep 2026, 4:40PM
20
Game markets graded
1
Props graded
The model's one call for this gamethe prediction, first
Sloane Stephens 5 Spread +173

The model graded 21 markets for Sloane Stephens vs Marta Kostyuk (Tennis) and this is the one it backs hardest — a lean, not a lock. A $100 bet returns about $273 if it lands. This one is free — every other market and all player props are Pro. Tip-off Wed 2 Sep 2026, 4:40PM.

Our confidenceLean
Chance to win56.6%
The price says35.3%
Best price+173
The rest of this game's boardgraded market by market
Spread Sloane Stephens 5 Lean57% chance +173
Spread High65% chance —
Spread Lean40% chance —
Spread Long-shot32% chance —
Spread Lean56% chance —
Set 1 Game Handicap Lean55% chance —
Set 2 Total Games High62% chance —
Total Games High65% chance —
Total Games Lean57% chance —
Moneyline × 1 prop Highup to 92% —
High = 60%+ chance to win · Lean = 40–60% · Long-shot = under 40%
Every Tennis game on today's board →

Sloane Stephens and Marta Kostyuk last met on Wed 2 Sep 2026. The model's calls from that game are graded below. Today's board: every Tennis game priced right now.

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This game is done — from the model’s graded calls on this game
Over 18.5 · $100 returned $187

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Game picks

GOOD PRICE in green
Spread
Sloane Stephens
+5.5
+110
+ 19 more markets
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All 20 game markets and 1 player props for this matchup — every line, every call the model backs — plus every pick across the slate. Join 56,619+ members.

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Calibrated model vs market

Our chance vs the price, market by market
PickMarketModel lean
Sloane StephensSpreadThe model likes this price 🔒 Unlock with Pro
Sloane StephensSpreadThe model likes this price 🔒 Unlock with Pro
Sloane StephensSpreadThe model likes this price 🔒 Unlock with Pro
Sloane StephensSpreadThe model likes this price 🔒 Unlock with Pro
Sloane StephensSpreadThe model likes this price 🔒 Unlock with Pro
Sloane StephensSet 1 Game HandicapThe model likes this price 🔒 Unlock with Pro
OverSet 2 Total GamesThe model likes this price 🔒 Unlock with Pro
OverTotal GamesThe model likes this price 🔒 Unlock with Pro
OverTotal GamesThe model likes this price 🔒 Unlock with Pro
OverTotal GamesThe model likes this price 🔒 Unlock with Pro
OverSet 2 Total GamesThe model likes this price 🔒 Unlock with Pro
OverTotal GamesThe model likes this price 🔒 Unlock with Pro
OverSet 1 Total GamesThe model likes this price 🔒 Unlock with Pro
OverSet 2 Total GamesThe model likes this price 🔒 Unlock with Pro
OverSet 1 Total GamesThe model likes this price 🔒 Unlock with Pro
OverSet 2 Total GamesThe model likes this price 🔒 Unlock with Pro
OverSet 1 Total GamesThe model likes this price 🔒 Unlock with Pro
OverSet 1 Total GamesThe model likes this price 🔒 Unlock with Pro

Which price is actually worth taking?

Pro shows you, in plain English, how far each price is off — and how much to put on it. No maths needed on your side.

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Injuries & who's out

Injuries & availability

Sloane Stephens

Player availability is not tracked for Tennis on this page. We only carry official injury/availability feeds for MLB, NBA, NFL and NHL.

Marta Kostyuk

Player availability is not tracked for Tennis on this page. We only carry official injury/availability feeds for MLB, NBA, NFL and NHL.

Weather & injury impact for this fixture

Conditions · who's out · how it moves the number
For Sloane Stephens vs Marta Kostyuk: Tennis weather isn't a tracked factor for this fixture on our data, and player availability isn't tracked for Tennis on this page.

General rule: weather isn't a material factor for this sport in our models — availability of key players is the variable that moves the line.

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See the weather- and injury-adjusted projected line and the model's with/without delta for this fixture. 🔒 Unlock with Pro

Player props

GOOD PRICE in green
PlayerTeamStat
Moneyline

+ 1 player prop graded for this game — the line, the call and how much to put on each, with Pro.

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Betting angles

Markets & form
Total GamesMarta Kostyuk vs Sloane StephensNo line posted
70%model over %
1.69fair price
PickOver 17.5Model69.7%Fair1.69Odds-179

Marta Kostyuk vs Sloane Stephens — Total Games (tennis). BetBetter most recently tracked: Over 17.5 at -179, fair price 1.69; our model makes it 69.7% (HIGH). BetBetter tracks this market continuously; free-board results appear here once there are enough of them.

Game HandicapMarta Kostyuk vs Sloane StephensNo line posted
61%model cover %
2.25fair price
PickSloane Stephens 5.5Model61.3%Fair2.25Odds+110

Marta Kostyuk vs Sloane Stephens — Game Handicap (tennis). BetBetter most recently tracked: Sloane Stephens 5.5 at +110, fair price 2.25; our model makes it 61.3% (LEAN). BetBetter tracks this market continuously; free-board results appear here once there are enough of them.

Set 1 Total GamesMarta Kostyuk vs Sloane StephensNo line posted
84%model over %
1.32fair price
PickOver 7.5Model83.9%Fair1.32Odds-455

Marta Kostyuk vs Sloane Stephens — Set 1 Total Games (tennis). BetBetter most recently tracked: Over 7.5 at -455, fair price 1.32; our model makes it 83.9% (HIGH). BetBetter tracks this market continuously; free-board results appear here once there are enough of them.

Set 1 Game HandicapMarta Kostyuk vs Sloane StephensNo line posted
61%model cover %
2.21fair price
PickSloane Stephens 2.5Model60.6%Fair2.21Odds+105

Marta Kostyuk vs Sloane Stephens — Set 1 Game Handicap (tennis). BetBetter most recently tracked: Sloane Stephens 2.5 at +105, fair price 2.21; our model makes it 60.6% (LEAN). BetBetter tracks this market continuously; free-board results appear here once there are enough of them.

Sloane Stephens @ Marta Kostyuk — what the model found

Our model graded 21 betting markets for Sloane Stephens at Marta Kostyuk — 20 on the game itself and 1 on individual players. One pick is free on this page.

20
Game markets graded
1
Player bets graded

The model checked every betting market for this game and graded 21 of them. One pick is free on this page — the one the model likes most. Scroll down to see it.

🔒 The other 20 graded calls for this game — with how much to bet on each — are for members.
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Cashed picks for this matchup

From the public log
DateMarketPickResult
02 Sep 26 Set 1 Total Games Over 6.5 ✓ HIT
02 Sep 26 Total Games Over 15.5 ✓ HIT
02 Sep 26 Total Games Over 16.5 ✓ HIT
02 Sep 26 Total Games Over 18.5 ✓ HIT
02 Sep 26 Total Games Over 17.5 ✓ HIT

Every pick — wins and losses — is logged on the public record.

About this matchup

How we read the game

This page tracks the Bet Better model's pick history and predictions for Sloane Stephens vs Marta Kostyuk in the Tennis. You may also see this matchup written as Stephens vs Kostyuk, or as Kostyuk vs Stephens. The most recent game between them was Wednesday 2 September 2026. The model has generated 20 game picks and 1 player prop for this matchup. Review the picks and historical data above to guide your Tennis betting strategy for this matchup.

Head-to-head record

Completed matches · last 1 meeting
Marta Kostyuk 1–0 across the last meeting
DateWinnerScoreTournamentSurface
18 Aug 2026Marta Kostyuk7-5 7-5Western & Southern Financial Group Women's Open · 3rd RoundHard
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