How to Watch Mariners vs. Royals: TV Channel & Live Stream - September 18

Updated Sep. 18, 2025 9:22 a.m. ET

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Stephen Kolek will take the mound for the Kansas City Royals against Julio Rodriguez and the Seattle Mariners on Thursday at 2:10 p.m. ET.

Here's everything you need to know to watch the Mariners vs. Royals game.

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Mariners vs. Royals Game Information & How to Watch

Date	Favorite	Spread	Total	Favorite Moneyline	Underdog Moneyline	Result
9/17/2025	Royals	-1.5	8.5	-127	+107	7-5 KC
9/16/2025	Mariners	-1.5	8.5	-138	+116	12-5 SEA
7/3/2025	Mariners	-1.5	7.5	-127	+107	3-2 KC
7/2/2025	Mariners	-1.5	7	-168	+140	3-2 SEA
7/1/2025	Mariners	-1.5	8	-136	+115	6-3 KC
6/30/2025	Mariners	-1.5	7	-159	+133	6-2 SEA
6/9/2024	Royals	-1.5	8	-118	-101	6-5 SEA
6/8/2024	Mariners	-1.5	8.5	-131	+111	8-4 KC
6/7/2024	Mariners	-1.5	9	-122	+103	10-9 KC
5/15/2024	Mariners	-1.5	7.5	-144	+121	4-2 SEA

Cal Raleigh is the Mariners best power hitter, connecting on 56 round-trippers this season in addition to accumulating 118 RBI, both team highs.
Among all hitters in MLB, Raleigh is first in homers and third in RBI.
Raleigh carries a five-game hitting streak into this matchup. In his last five games he is batting .474 with three doubles, three home runs, two walks and five RBIs.
Julio Rodriguez is batting .271 with 31 doubles, four triples, 30 home runs and 38 walks.
Rodriguez is 16th in home runs and 18th in RBI on the season.
Rodriguez heads into this game looking for his eighth game in a row with a hit. In his last 10 outings he is batting .350 with seven doubles, four walks and seven RBIs.
Josh Naylor leads the Mariners with a .285 batting average.
Naylor will look to build on his four-game hitting in this game. In his last five games he is batting .273 with a double and six RBIs.
Eugenio Suarez is hitting .230 with 26 doubles, 46 home runs and 44 walks.

Date	Opponent	Score	Pitching Matchup
Sept. 12	Angels	W 2-1	Luis Castillo vs Yusei Kikuchi
Sept. 13	Angels	W 5-3	Bryan Woo vs Mitch Farris
Sept. 14	Angels	W 11-2	George Kirby vs Kyle Hendricks
Sept. 16	@ Royals	W 12-5	Logan Gilbert vs Michael Wacha
Sept. 17	@ Royals	L 7-5	Bryce Miller vs Cole Ragans
Sept. 18	@ Royals	-	Luis Castillo vs Stephen Kolek
Sept. 19	@ Astros	-	Bryan Woo vs Hunter Brown
Sept. 20	@ Astros	-	George Kirby vs Framber Valdez
Sept. 21	@ Astros	-	Logan Gilbert vs Jason Alexander
Sept. 23	Rockies	-	Bryce Miller vs McCade Brown
Sept. 24	Rockies	-	Luis Castillo vs Tanner Gordon

Bobby Witt Jr. leads the team in batting average with a mark of .293.
Witt ranks 59th in home runs and 40th in RBI among all hitters in the majors.
Witt carries a three-game hitting streak into this matchup. In his last five games he is hitting .300 with a double, a triple, a home run, two walks and three RBIs.
Maikel Garcia has 36 doubles, five triples, 16 home runs and 57 walks while hitting .289.
Garcia is currently 117th in home runs and 76th in RBI in the big leagues.
Vinnie Pasquantino has been solid source of run production for the Royals with 30 long balls and 104 runs batted in.
Salvador Perez has 34 doubles, 29 home runs and 25 walks while hitting .238.

Date	Opponent	Score	Pitching Matchup
Sept. 12	@ Phillies	L 8-2	Michael Lorenzen vs Walker Buehler
Sept. 13	@ Phillies	L 8-6	Ryan Bergert vs Taijuan Walker
Sept. 14	@ Phillies	W 10-3	Noah Cameron vs Aaron Nola
Sept. 16	Mariners	L 12-5	Michael Wacha vs Logan Gilbert
Sept. 17	Mariners	W 7-5	Cole Ragans vs Bryce Miller
Sept. 18	Mariners	-	Stephen Kolek vs Luis Castillo
Sept. 19	Blue Jays	-	Michael Lorenzen vs Max Scherzer
Sept. 20	Blue Jays	-	Noah Cameron vs Shane Bieber
Sept. 21	Blue Jays	-	Michael Wacha vs José Berrios
Sept. 23	@ Angels	-	Cole Ragans vs Jose Soriano
Sept. 24	@ Angels	-	Michael Lorenzen vs Yusei Kikuchi