Las Vegas Aces vs Golden State Valkyries WNBA Semifinals Series Preview & Prediction
Updated October 3, 2026
Updated October 3, 2026
Golden State and Las Vegas enter the WNBA semifinals coming off of three-game series wins in the opening round. The Valkyries needed a 16-point comeback to escape Dallas 77-73 in Friday’s deciding Game 3, while the Aces finished Indiana 94-83 one night earlier behind another huge performance from A’ja Wilson. Golden State owns home-court advantage after a 32-12 regular season, but Las Vegas won all 3 regular-season meetings and arrives with the league’s most difficult individual player to defend playing her best basketball of the year. The best-of-5 series begins Sunday, October 4, at Chase Center.
Why Our Model Sees Value:
“Golden State’s season-long defensive numbers and home-court advantage deserve considerable weight, but the current price appears to discount how consistently Las Vegas has solved the Valkyries and how dominant Wilson has been entering this round.”
Not an Efficient Market
Polymarket’s live basketball board listed Las Vegas at 53% to advance to the Finals early Saturday. Since the winner of this semifinal moves into the Finals, that contract serves as the relevant series price. The market is still fairly young and trading activity has been modest compared with larger Polymarket sports markets, which is another reason to avoid treating the current probability as especially efficient.
Price vs. Projections
My projection lands at 58% for Las Vegas, creating a 5% difference from the current Polymarket number. I would still want at least a 2% cushion before taking the Aces, making 56¢ the highest entry point. Golden State absolutely has a path to controlling this series through defense, pace, and home court, but Las Vegas has the better half-court scoring centerpiece and has already shown it can create efficient offense against this specific opponent. A price close to a coin flip does not fully reflect those advantages.
Recommended Position:
Aces to Advance
Current Price:
53¢
Model Probability:
58%
Market Probability:
53%
Model Edge:
5%
Entry Threshold:
56¢
Model Confidence:
80/100
There is a strong statistical case for Golden State when making WNBA predictions for this series. The Valkyries finished 32-12 with a league-best 100.6 defensive rating and a league-best +9.4 net rating. They allowed only 75.1 points per game, also the best figure in the WNBA, while slowing games to a league-low pace of 74.5 possessions per 40 minutes. Las Vegas finished 31-13 with a 114.3 offensive rating, 107.2 defensive rating and +7.1 net rating.
Golden State does not want this series turning into repeated open-floor possessions where Jackie Young and Chelsea Gray can create before the defense gets organized. The Valkyries are more comfortable forcing opponents deep into the shot clock, keeping the score down and making every possession feel expensive.
Veronica Burton is central to that identity. She produced 12.2 points and 5.7 assists per game during the regular season and was a factor in Golden State's Game 3 victory over the Wings. Gabby Williams provides another high-level perimeter defender, while Kiah Stokes gives Golden State size and rim protection inside.
The biggest concern for anyone backing Golden State is simple: Las Vegas has already beaten this team 3 times.
The Aces won 91-81 at Chase Center on May 31, followed with an 84-79 victory in Las Vegas on June 6 and closed the regular-season series with another comfortable home win in June. Wilson scored 28 points with 15 rebounds in the first meeting, while Jackie Young produced 27 points in the second. Golden State’s defense was excellent across the full season, but Las Vegas repeatedly found ways around it.
Wilson averaged 26.2 points and 9.4 rebounds during the regular season while shooting 52.7% from the floor. Her 32.4 PER, 62.4% true shooting rate, and 122 individual offensive rating all illustrate the level of production Las Vegas received throughout the year.
She has somehow raised that level in the postseason. Wilson averaged 32 points while shooting 62.5% against Indiana, including 38 points in Game 1 and 36 points with 10 rebounds in the deciding Game 3. Her playoff true shooting rate through the first round was 75.7%.
Golden State can send Stokes, Thornton, and Williams at different points, but there is no obvious individual answer. Double teams bring their own problems because Young shot 38.3% from 3 during the regular season and averaged 18.9 points and 6.8 assists. Gray added 6.7 assists per game and remains one of the Aces’ primary late-clock creators.
Golden State has enough defense, depth, and home-court advantage to make this a long series. Its +9.4 regular-season net rating was better than Las Vegas’ mark, and the Valkyries have already shown they can survive ugly playoff games where their offense stalls.
The problem is the specific opponent. Las Vegas swept the regular-season series, enters 9-1 across its last 10 games and has Wilson playing at an extraordinary level. Golden State can reduce possessions and make the Aces work, but Las Vegas has more reliable late-clock creation through Wilson, Young and Gray. Over 5 possible games, that becomes increasingly valuable.
My projection gives Las Vegas a 58% chance to advance, compared with the current 53% Polymarket price. The gap is enough for an Aces position at 56¢ or lower, with Las Vegas advancing in 5 games as the series call.
