SportsBaseballMLB

Houston Astros vs. Seattle Mariners

$35.8K volume, 24h250 fills · 88 traders · 57 questions

Reported by Polymarket: open interest $60.3K · liquidity $1.24M · 24h volume 65,657 shares

CreatedSep 17, 2026 13:00 UTC
Sep 17, 2026 13:00 UTC
First tradeSep 21, 2026 04:28 UTC
Event startSep 24, 2026 02:10 UTC
Oct 1, 2026 02:10 UTC

Resolves via mlb.com

Part of MLB · daily

Moneyline

Question	Yes	No	24h volume
Houston Astros vs. Seattle Mariners	46.5¢	53.5¢	$13.8K

Totals

Question	Yes	No	24h volume
O/U 7.5	52.5¢	47.5¢	$7.6K
O/U 8.5	43.5¢	56.5¢	$2.2K
O/U 9.5	33.5¢	66.5¢	$65.34

Team First Five Total

Question	Yes	No	24h volume
1st 5 Innings O/U 4.5	42.5¢	57.5¢	$7.1K
1st 5 Innings O/U 5.5	34.5¢	65.5¢	$931.69
1st 5 Innings O/U 6.5	23.0¢	77.0¢	$11.04
1st 5 Innings O/U 3.5	58.0¢	42.0¢	$4.14
1st 5 Innings O/U 2.5Quiet	73.0¢	27.0¢	—

Spreads

Question	Yes	No	24h volume
Spread -1.5	36.5¢	63.5¢	$4.0K
Spread -1.5	34.5¢	65.5¢	$31.89
Spread -2.5Quiet	26.5¢	73.5¢	—
Spread -2.5Quiet	23.5¢	76.5¢	—

Nrfi

Question	Yes	No	24h volume
NRFI	49.5¢	50.5¢	$80.18

Team First Five Winner

Question	Yes	No	24h volume
Houston Astros	36.0¢	64.0¢	$10.00
Seattle MarinersQuiet	47.5¢	52.5¢	—
DrawQuiet	15.5¢	84.5¢	—
(3 of 3 priced)	99.0¢

Team First Five Spread

Question	Yes	No	24h volume
1st 5 Innings Spread -1.5	32.5¢	67.5¢	$5.20
1st 5 Innings Spread -1.5Quiet	23.5¢	76.5¢	—

Team Totals

Question	Yes	No	24h volume
Houston Astros O/U 1.5Quiet	82.0¢	18.0¢	—
Seattle Mariners O/U 2.5Quiet	69.5¢	30.5¢	—
Houston Astros O/U 2.5Quiet	66.5¢	33.5¢	—
Seattle Mariners O/U 3.5Quiet	55.5¢	44.5¢	—
Houston Astros O/U 3.5Quiet	51.0¢	49.0¢	—
Seattle Mariners O/U 4.5Quiet	41.0¢	59.0¢	—
Houston Astros O/U 4.5Quiet	38.5¢	61.5¢	—
Seattle Mariners O/U 5.5Quiet	30.5¢	69.5¢	—
Houston Astros O/U 5.5Quiet	28.0¢	72.0¢	—
Seattle Mariners O/U 6.5Quiet	26.0¢	74.0¢	—

Team Inning8 Winner

Question	Yes	No	24h volume
DrawQuiet	60.5¢	39.5¢	—
Houston AstrosQuiet	21.0¢	79.0¢	—
Seattle MarinersQuiet	21.0¢	79.0¢	—
(3 of 3 priced)	102.5¢

Team Inning2 Winner

Question	Yes	No	24h volume
DrawQuiet	60.5¢	39.5¢	—
Seattle MarinersQuiet	23.0¢	77.0¢	—
Houston AstrosQuiet	20.0¢	80.0¢	—
(3 of 3 priced)	102.5¢

Team Inning7 Winner

Question	Yes	No	24h volume
DrawQuiet	60.0¢	40.0¢	—
Seattle MarinersQuiet	22.0¢	78.0¢	—
Houston AstrosQuiet	18.0¢	82.0¢	—
(3 of 3 priced)	99.5¢

Team Inning6 Winner

Question	Yes	No	24h volume
DrawQuiet	57.0¢	43.0¢	—
Seattle MarinersQuiet	23.0¢	77.0¢	—
Houston AstrosQuiet	21.5¢	79.0¢	—
(3 of 3 priced)	101.0¢

Team Inning4 Winner

Question	Yes	No	24h volume
DrawQuiet	57.5¢	42.5¢	—
Seattle MarinersQuiet	24.0¢	76.0¢	—
Houston AstrosQuiet	18.0¢	82.0¢	—
(3 of 3 priced)	98.5¢

Team Inning3 Winner

Question	Yes	No	24h volume
DrawQuiet	54.5¢	45.5¢	—
Seattle MarinersQuiet	23.5¢	76.5¢	—
Houston AstrosQuiet	22.5¢	77.5¢	—
(3 of 3 priced)	101.0¢

Team Inning5 Winner

Question	Yes	No	24h volume
DrawQuiet	55.5¢	44.5¢	—
Seattle MarinersQuiet	23.0¢	77.0¢	—
Houston AstrosQuiet	20.5¢	79.5¢	—
(3 of 3 priced)	99.0¢

Team Inning1 Winner

Question	Yes	No	24h volume
DrawQuiet	52.0¢	48.0¢	—
Seattle MarinersQuiet	24.5¢	75.5¢	—
Houston AstrosQuiet	22.5¢	77.5¢	—
(3 of 3 priced)	98.5¢

Team Inning9 Winner

Question	Yes	No	24h volume
DrawQuiet	50.0¢	50.0¢	—
Houston AstrosQuiet	30.5¢	69.5¢	—
Seattle MarinersQuiet	28.5¢	71.5¢	—
(3 of 3 priced)	109.5¢

Game Extra Innings

Question	Yes	No	24h volume
Extra InningsQuiet	10.0¢	90.0¢	—

Market details

Category: Sports
Subcategory: MLB
Discipline: Baseball
Series: MLB
Teams: Houston Astros vs. Seattle Mariners

Prices as of Sep 23, 2026 19:30 UTC; volume from on-chain fills over the last 24h. Trading data is ours; event metadata comes from Polymarket. Not affiliated with Polymarket · Not investment advice.

Questions in this fixture