Best WNBA bets today: Sunday's playoffs picks include two plays [9/21/2025]

Today’s best WNBA bets for September 21, 2025 are here, with Sunday’s WNBA picks built on tens of thousands of data simulations analyzing the latest odds and matchups.

These WNBA best bets include matchups like the Mercury vs. Lynx game at 5:00PM ET, with this article updated throughout the day to feature the highest-probability plays based on thousands of data-driven simulations from our predictive analytics model.

But if you're serious about long-term profit, it's not just about probability—it's about edge. To unlock our highest-edge WNBA bets—the ones with true long-term value—join Dimers Pro.

Pro members get unlimited access to everything Dimers has to offer on Sunday, September 21, 2025, including our complete suite of picks and best bets for today and the week ahead.

List of WNBA best bets today [9/21, updated 2:31PM ET]

After digging deep into the numbers and conducting thousands of simulations, our independent predictive analytics model has figured out the best WNBA bets for the playoffs action on Sunday, September 21, 2025.

Mercury +8.5 (-115)

• Probability: 62.6%
• Edge: 9.1%
• Matchup: Mercury vs. Lynx (5:00PM ET, Sunday)

Our model has pinpointed a high-probability WNBA betting opportunity today, which comes in the Mercury vs. Lynx matchup. We recommend a bet on Mercury +8.5 at -115 odds, with our analysis showing a 62.6% chance of hitting and a compelling edge of 9.1%.

Mercury vs. Lynx over 159 points (-110)

• Probability: 57.8%
• Edge: 5.5%
• Matchup: Mercury vs. Lynx (5:00PM ET, Sunday)

Our model has found another strong WNBA bet for Sunday's basketball action, again in the game between the Mercury and Lynx. We suggest placing an over/under wager on over 159 points at -110 odds, with a 57.8% probability delivering a 5.5% edge.

Fever +8.5 (-105)

• Probability: 57.7%
• Edge: 6.5%
• Matchup: Fever vs. Aces (3:00PM ET, Sunday)

Our model has found another strong WNBA bet for today's basketball action, this time in the Fever vs. Aces game. We recommend a bet on Fever +8.5 at -105 odds. Our projections shows a 57.7% probability and 6.5% edge for this wager.

WNBA best bets: Sunday, 9/21/2025

As of 2:31PM ET, here are our top three WNBA bets by probability recommended by our model:

Matchup	Bet	Odds	Probability	Edge
Mercury vs. Lynx	Mercury +8.5	-115 @ BetMGM	62.6%	9.1%
Mercury vs. Lynx	Over 159 Points	-110 @ FanDuel	57.8%	5.5%
Fever vs. Aces	Fever +8.5	-105 @ BetMGM	57.7%	6.5%

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Today, Dimers Pro subscribers have access to five WNBA picks—with access to all of these being what makes a difference over time.

Join Dimers Pro now to access these picks, as well as a comprehensive range of props, trends and parlays for September 21, 2025.

List of upcoming WNBA playoffs games to bet on [9/21/2025]

• Fever vs. Aces (3:00PM ET, Sunday)
• Mercury vs. Lynx (5:00PM ET, Sunday)

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More about WNBA

The bets on this page form part of our WNBA player props and WNBA best bets series.

For more WNBA betting content, we have WNBA betting news and the latest WNBA title odds and predictions.

Conclusion

Our WNBA best bets are locked and loaded for September 21, 2025, featuring plays such as Mercury +8.5 and over 159 points also in the Mercury vs. Lynx matchup. Powered by advanced simulations, these picks are here to boost your betting game.

This article, enhanced by AI and automation, aims to deliver accurate WNBA insights quickly, with human oversight ensuring high editorial quality. Our predictions are grounded in current data to help you make informed decisions. For additional resources and advice on responsible gambling, please call 1-800-GAMBLER.

All odds and probabilities in this article are correct and accurate at the time of publication.

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