The Seattle Mariners, riding an impressive 10-game winning streak, will head to Kauffman Stadium to take on the Kansas City Royals. With an 83-68 record, the Mariners currently hold the top spot in the AL West. The game is scheduled for Wednesday, September 17, 2025, at 7:40 PM, and will be broadcast on RSNW.
The Kansas City Royals, with a record of 75-76, sit third in the AL Central. They hope to bounce back after a recent loss to the Mariners, where they fell 12-5. The Royals have a 40-36 home record and will look to leverage that advantage in this night game under overcast skies.
In their recent game, the Mariners demonstrated offensive prowess with 14 hits and five home runs. Dominic Canzone was a standout, achieving a perfect 5-for-5 at the plate. The Mariners’ dominant performance highlights their current momentum as they look to extend their winning streak against the Royals.
Royals vs Mariners At a Glance
- Seattle Mariners Record: 83-68, leading AL West with a 10-game winning streak.
- Kansas City Royals Record: 75-76, 3rd in AL Central, currently on a 1-game losing streak.
- Stadium: Kauffman Stadium in Kansas City, MO — outdoor field setting.
- Game Time & Channel: Scheduled for 7:40 PM on RSNW.
- Weather: Very hot day with overcast clouds and a light crosswind breeze.
- Game Odds: Mariners at -107, Royals at -111 on the moneyline; total runs set at 8.5.
Royals Ready for Mariners Challenge: Can They Bounce Back?
Seattle Mariners: Hitting Overview
The Seattle Mariners are entering the game with a keen focus on their offensive capabilities. With a batting average that ranks them 10th in the league at .244, they are looking to leverage their hitting strengths against the Royals. The team also boasts a respectable rank of 4th in doubles, hitting 264 this season.
However, their on-base percentage of .304 places them 19th, indicating some room for improvement in terms of getting on base consistently. The Mariners will be keen to maximize their opportunities at the plate against Kansas City’s pitching staff.
Power and Patience at the Plate
Seattle’s power hitters have contributed to a total of 146 home runs this season, placing them 23rd in the league. Their slugging percentage of .391, ranked 17th, further highlights their capability to produce extra-base hits.
Despite their power potential, the Mariners have struggled with patience at the plate, as evidenced by their 27th-ranked 400 walks this season. This suggests a potential area of vulnerability that the Royals might exploit.
Pitching Strengths and Challenges
Seattle’s pitching staff has delivered a strong performance this season, with a team ERA of 3.78 that ranks them 5th in the league. Their ability to limit opponents’ batting average to .242 ranks them 10th, underscoring their effectiveness on the mound.
However, the Mariners have given up 160 home runs, ranking them 6th in the league. This could be a key factor as they face the Royals’ lineup, which features several power hitters.
Starting Pitcher Spotlight: Bryce Miller
Bryce Miller takes the mound for the Mariners with an ERA of 5.59 and a WHIP of 1.37. His record of 4-5 reflects some inconsistency, making it crucial for him to find his form against the Royals.
Miller’s challenge will be to manage the Royals’ potent offense, especially given Kansas City’s ability to hit home runs. His performance could be pivotal in determining the outcome of the game.
Team Betting Trends
- SU Last 3 Games: 1-2 (33.3%)
- SU All Games: 75-76 (49.7%)
- Runline as Underdog: 48-40 (54.5%)
- O/U Last 3: 3-0 (100.0%)
- O/U All Games: 65-86 (43.0%)
Seattle will need to overcome their recent straight-up struggles, where they have won just one of their last three games. Their overall record of 75-76 suggests a closely matched contest against the Royals.
On the runline, the Mariners have found more success as underdogs, with a record of 48-40. Additionally, their recent over/under performance has been perfect in the last three games, hitting the over each time.
Mariners Poised to Continue Dominance Against Royals
Offensive Overview
The Seattle Mariners have demonstrated a solid offensive performance this season, holding a batting average of .244, which ranks them 10th in the league. Their on-base percentage is also ranked 10th at .319. Notably, their slugging percentage stands at .419, placing them 9th, and they have managed to hit 221 home runs, the second-highest in the league.
Dominic Canzone has been a standout performer, highlighted by his stellar game against the Royals where he went 5-for-5 with three home runs. Cal Raleigh remains a crucial player, currently leading the majors with 56 home runs. His ability to hit the long ball makes him a pivotal player in the Mariners’ offensive arsenal.
Pitching Insights
On the pitching front, the Mariners have an earned run average (ERA) of 3.92, placing them 13th in the league. They rank 10th in batting average against at .242, showcasing a relatively effective pitching staff. Their quality starts, ranked 6th with 63, reflect the ability of their starting pitchers to provide a solid foundation for games.
Bryce Miller will take the mound with a season ERA of 5.59 and a WHIP of 1.37. While his record of 4-5 might not be the most impressive, his recent performances show promise as he looks to capitalize on the Royals’ weaknesses.
Key Players to Watch
Julio Rodríguez continues to be a significant contributor with a batting average of .271, 30 home runs, and 93 RBIs. Eugenio Suárez adds power to the lineup with 45 home runs, although his batting average is lower at .224. Josh Naylor provides consistency, hitting .283 with 19 home runs and 86 RBIs.
J.P. Crawford’s contributions cannot be overlooked, with his solid defensive skills and a batting average of .264. Jorge Polanco, with a batting average of .268 and 24 home runs, offers depth to the lineup and has been consistent in driving in runs.
Team Betting Trends
- SU Last 3 Games: 3-0 (100.0%)
- Runline Last 3: 3-0 (100.0%)
- O/U Last 3: 3-0 (100.0%)
- SU in Away Games: 35-41 (46.1%)
- Runline in Away Games: 29-47 (38.2%)
- O/U in Away Games: 44-32 (57.9%)
As the Mariners continue their pursuit for a postseason spot, every win is crucial. With Cal Raleigh’s recent performance, setting the majors’ single-season home run mark for switch hitters, the Mariners’ offense is expected to maintain its high level of play.
The Mariners’ recent form has been exceptional, with a 10-0 streak in their last 10 games, demonstrating their capability to perform under pressure. As they take on the Kansas City Royals, maintaining this momentum will be key to securing another victory.
Royals vs Mariners Prediction: Mariners -107
The Seattle Mariners come into this game with significant momentum, having won their last ten games and leading the AL West division. Their recent form is reinforced by a potent offense, highlighted by Cal Raleigh’s historic season for home runs as a switch hitter. This level of performance indicates the Mariners are likely to continue their winning streak against a struggling Royals team.
Despite playing away, the Mariners’ -107 moneyline odds suggest a competitive yet favorable position for bettors. Seattle’s road record has been less impressive than their home performance, but their current form outweighs this concern. The Mariners’ offense, ranking second in home runs, provides a consistent threat against Kansas City’s pitching.
Pitching matchups are relatively even with Bryce Miller facing Cole Ragans, both of whom have struggled this season. However, given Seattle’s current form and offensive firepower, they have the edge. The Mariners should capitalize on any mistakes from the Royals’ pitching, further supported by their recent dominant win over Kansas City.
Considering the Mariners’ recent 12-5 victory at Kauffman Stadium and their strong divisional aspirations, Seattle is expected to emerge as the victor once again. A projected final score of Mariners 6 – Royals 4 aligns with their offensive capabilities and current winning trajectory.
- Royals vs Mariners Prediction: Mariners -107
- Royals vs Mariners Score: Mariners 6 – Royals 4
