Mariners vs. Royals Prediction, Odds, Picks – September 16

Data Skrive

Jorge Polanco and the Seattle Mariners hit the field against Vinnie Pasquantino and the Kansas City Royals on Tuesday at 7:40 p.m. ET, in the first of a three-game series at Kauffman Stadium. The Mariners are -139 moneyline favorites in this matchup against the Royals (+117). Seattle is favored on the run line (-1.5). An 8.5-run over/under has been set for the game.

Here’s everything you need from a betting perspective on the Mariners-Royals game, regarding the run line, moneyline and total, plus expert picks.

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Mariners vs. Royals Game Information & Odds

• When: Tuesday, September 16, 2025 at 7:40 p.m. ET
• Where: Kauffman Stadium in Kansas City, Missouri
• How to watch on TV: FDSKC and ROOT Sports NW

Mariners vs. Royals Prediction

• Score Prediction: Royals 5, Mariners 4
• Total Prediction: Under 8.5 runs
• Win Probabilities: Mariners 51%, Royals 49%

Mariners vs. Royals Betting Insights

• The Mariners have been favorites in 105 games this season and won 60 (57.1%) of those contests.
• Seattle has a record of 38-21 in games when bookmakers favor them by at least -139 on the moneyline.
• The implied probability of a win from the Mariners, based on the moneyline, is 58.2%.
• The Royals have come away with 39 wins in the 86 contests they have been listed as the underdogs in this season.
• Kansas City has a win-loss record of 19-23 when favored by +117 or worse by bookmakers this year.
• The moneyline set for this matchup implies the Royals have a 46.1% chance of coming away with a victory in the contest.

Mariners Recent Betting Performance

• The Mariners won all of the eight games it played as a moneyline favorite in their last 10 matchups.
• In their last 10 matchups (all had set totals), the Mariners combined with their opponents to go over the run total six times.
• The Mariners have a 7-3-0 record against the spread over their past 10 games.

Mariners Recent Stats

Mariners Player Insights

• Cal Raleigh leads the Mariners in home runs (54) and runs batted in (115).
• Raleigh’s home runs rank him first in the majors, and he is third in RBI.
• Raleigh takes a hitting streak of three games into this matchup. In his last five games he is batting .375 with two doubles, a home run, eight walks and two RBIs.
• Julio Rodriguez has 30 doubles, four triples, 30 home runs and 37 walks while batting .269.
• Rodriguez ranks 15th in homers and 18th in RBI in the majors.
• Rodriguez has five games in a row with at least one hit. In his last five games he is batting .400 with five doubles, three walks and four RBIs.
• Josh Naylor has put up a team-best batting average of .284.
• Naylor is on a two-game hitting streak entering this contest. During his last five outings he is batting .318 with a home run, a walk and six RBIs.
• Eugenio Suarez is hitting .226 with 25 doubles, 45 home runs and 44 walks.

Mariners Team Props

Royals Recent Betting Performance

• In eight games over the last 10 matchups when set as underdogs by bookmakers, the Royals had a record of 3-5.
• The Royals and their opponents have combined to hit the over five times in their last 10 games with a total.
• Over their last 10 games, the Royals are 3-7-0 against the spread.

Royals Recent Stats

Royals Player Insights

• Bobby Witt Jr. has 41 doubles, six triples, 22 home runs and 48 walks while hitting .292.
• Among all hitters in the majors, Witt’s home run total ranks 57th and his RBI tally is 43rd.
• Maikel Garcia’s .293 batting average is a team-high mark.
• Among all MLB hitters, Garcia ranks 113th in home runs and 71st in RBI.
• Pasquantino has been a significant run producer for the Royals with 30 home runs and 104 runs batted in.
• Salvador Perez is batting .237 with 34 doubles, 28 home runs and 23 walks.

Royals Team Props

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FOX Sports created this story using technology provided by Data Skrive and data from Sportradar.

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