TOTAL VOLUME:

$134.2b

24H VOL:

$130,522,377

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,438,389,636

404,028

Markets across

30,214

events

MATCHED EVENTS:

2,681

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Houston Astros vs. Washington Nationals
polymarket
predict

Who will win Houston Astros vs Washington Nationals?

Volume:
$644,129

O/U 9.5

 - Polymarket

O/U 9.5 - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jul 7, 2026

Closed: Jul 6, 6:45 PM EST

polymarket

Polymarket

View
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

O/U 9.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$98,190
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 10.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$38,968
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 18.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$8,705
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 19.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$2,572
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 4.5

100%
Yes 100¢No 0¢
1¢
N/A
$1,946
N/A
N/A
N/A
Settled
Yes
polymarket

NRFI

100%
Yes 100¢No 0¢
0.1¢
N/A
$1,752
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 11.5

100%
Yes 100¢No 0¢
0.7¢
N/A
$1,733
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 17.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$895
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 15.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$792
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 13.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$680
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 16.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$590
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 2.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$535
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 6.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$441
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 21.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$320
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 22.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$215
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 20.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$200
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 14.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$194
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 12.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$169
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 5.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$160
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings Spread -1.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$108
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings Spread -2.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$62
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 3.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$15
N/A
N/A
N/A
Settled
Yes
polymarket

Houston Astros vs. Washington Nationals

0%
Yes 0¢No 100¢
—
N/A
$390,489
N/A
N/A
N/A
Settled
Yes
predict

Houston Astros vs. Washington Nationals

N/A
N/A
—
$691
$10,197
N/A
N/A
N/A
Settled
No
polymarket

Spread -1.5

0%
Yes 0¢No 100¢
—
N/A
$51,568
N/A
N/A
N/A
Settled
Yes
Total markets: 25 of 38

Description

This event group covers two MLB prediction markets for the July 6, 6:45 PM ET game between the Houston Astros and Washington Nationals: one on the game winner and one on whether a run will be scored in the first inning. Both markets are offered across Polymarket and Predict platforms with identical resolution logic.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

Polymarket and Predict present identical resolution logic across both the game winner and first inning run markets, with no material divergence in edge case handling, timing, or source hierarchy.Primary resolution logic: Official MLB final statistics as recognized by MLB.com and the governing body; credible reporting consensus if official statistics unavailable within 24 hours of game conclusion

Core resolution logic:

  • Game Winner Market: Resolves to Houston Astros if Astros win; resolves to Washington Nationals if Nationals win
  • First Inning Run Market: Resolves Yes if at least one run is scored by either team in the 1st inning; resolves No if zero runs scored in 1st inning
  • Postponed Game: Market remains open until the game is completed; check home team schedule on MLB.com for makeup game date
  • Canceled Game (No Makeup): Both markets resolve 50-50
  • Tied Game: Game winner market resolves 50-50; first inning run market resolves based on actual runs scored in 1st inning
  • Resolution Source Hierarchy: Primary is official MLB final statistics; secondary is consensus of credible reporting if official statistics not published within 24 hours of game end

Edge cases & clarifications:

  • Game Postponement: Market remains open until game completion. Bettors should monitor the home team (Washington Nationals) schedule on MLB.com for makeup game scheduling.
  • Game Cancellation Without Makeup: Both markets resolve 50-50, returning equal value to all positions.
  • Tied Game: Game winner market resolves 50-50. First inning run market resolves based on actual runs scored in the 1st inning regardless of final tie.
  • Delayed Official Statistics: If MLB does not publish official final statistics within 24 hours of game conclusion, resolution uses consensus from credible sports reporting sources.
Timing: Resolution occurs after game completion and official MLB statistics publication. If official statistics unavailable, resolution occurs after 24-hour window using credible reporting consensus. Postponed games remain open until makeup game is played and resolved.Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.

Polymarket

In the upcoming MLB game between the Houston Astros and Washington Nationals, scheduled for July 6 at 6:45PM ET: This market will resolve to "Houston Astros" if the Houston Astros win the game. This market will resolve to "Washington Nationals" if the Washington Nationals win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.

Predict

In the upcoming MLB game between the Houston Astros and Washington Nationals, scheduled for July 6 at 6:45PM ET: This market will resolve to "Houston Astros" if the Houston Astros win the game. This market will resolve to "Washington Nationals" if the Washington Nationals win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.

Frequently asked questions

Prediction markets and sportsbooks price outcomes differently because they operate under distinct incentive structures. Sportsbooks set odds to balance their book and lock in profit margins, while prediction markets rely on traders' direct financial stakes to discover prices. This market may show materially different odds than major sportsbooks because prediction traders are often faster to incorporate breaking news—injuries, lineup changes, weather—and face no house edge. Comparing this market's implied probability to your preferred sportsbook can reveal value opportunities, though both reflect genuine uncertainty about the game's result.

Polymarket and Predict may quote different odds on the same matchup for several reasons. Polymarket and Predict can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Liquidity varies by platform, so smaller order flow on one venue can push prices away from the true consensus. User demographics, fee structures, and settlement rules also differ, leading traders to weight information or risk differently. Arbitrage opportunities sometimes emerge when one platform lags in incorporating news, though transaction costs and withdrawal delays typically prevent perfect convergence. Monitoring both venues helps you spot temporary mispricings and understand which platform's crowd is leading price discovery.

Several catalysts can shift odds significantly before the game begins. Roster news—starting pitcher changes, late-inning bullpen injuries, or unexpected lineup adjustments—often triggers sharp moves. Weather forecasts, travel delays, or off-field controversies can also sway trader sentiment. Once play starts, live game action drives continuous repricing: early runs, defensive errors, or momentum swings will cause rapid position adjustments. Monitor team news feeds, official roster announcements, and real-time game updates to anticipate how this market may react. Traders who spot these signals early often capture the largest gains.