Kansas City Royals vs
Seattle MarinersPredictions & Preview

Mariners Favored to Win in Final Game Against Royals: Pitching Duel Expected

The 2025 MLB season continues with the Kansas City Royals facing off against the Seattle Mariners in the final game of a four-game American League series at T-Mobile Park in Seattle, Washington. The teams have split the first two games, with the Mariners winning the opener 6-2 and the Royals responding with a 6-3 victory. Our prediction for this game and analysis of the matchup between the Royals and Mariners is detailed in this article, published before Wednesday's results. The game is scheduled for 10:10 PM ET, with the Mariners favored to win at -164 moneyline and a total of 7.0 runs. Seth Lugo will start for the Royals, with Bryan Woo starting for the Mariners. The opening line has Seattle as -150 favorites, with the current line at Seattle -120.

Betting Odds

• Moneyline: Royals +109 | Mariners -120
• Spread: Royals +1.5 (-195) | Mariners -1.5 (+170)
• Total: Over/Under 7.5 (-110)
• Based on the moneyline, the implied probability that Seattle will win straight-up is 55%.

Kansas City vs Seattle Stats

Kansas City Royals

The Kansas City Royals recently broke a two-game losing streak with a 6-3 victory over the Mariners, marking their second win in 10 games. Currently, the struggling Royals are 4.5 games behind the final wild card spot in the American League. During their 10-game slump, the Royals have only scored 26 runs and have struggled with a .207/.274/.306 slash line and three home runs in 324 at-bats. The bullpen has posted a 4.01 ERA and 1.22 WHIP in the same timeframe. Seth Lugo will be pitching for the Royals in their upcoming game against the Mariners, with a 5-5 record, 2.74 ERA, and 1.08 WHIP in 2025. Lugo last faced the Mariners in 2022, and only five players on the current Mariners roster have previously faced him. The team's current power ranking is 25, ranking 30th in offense averaging 3.30 runs per game, 3rd in defense allowing 3.70 runs per game, with a season record of 40-47.

Seattle Mariners Analysis

The Seattle Mariners currently hold the final wild card spot in the American League standings. They have shown some inconsistency in their recent performance, going 8-7 over the past 15 games. Despite this, they have been productive at the plate with a .278/.332/.445 slash line and strong bullpen performances. Bryan Woo will be the starting pitcher for the Mariners in their upcoming game against the Kansas City Royals. Woo has had a successful season so far with a 7-4 record, 2.93 ERA, and 0.97 WHIP. In their previous matchup, Woo pitched well against the Royals, allowing only one run in 5.1 innings. The Mariners currently have a power ranking of 5 and rank 13th in offense, averaging 4.56 runs per game. The team's record stands at 45-41 overall. Despite Kansas City winning 2 out of their last 3 matchups against Seattle, the Mariners have a good chance of success with Woo on the mound.

Exciting Pitching Duel Expected in Mariners vs. Royals Matchup

In the upcoming match, we anticipate a pitching duel between two highly skilled right-handed pitchers. Seth Lugo has shown impressive performance with only two earned runs allowed in his last four starts spanning over 23.2 innings, while Bryan Woo has conceded four runs (two earned) in his previous three starts covering 19 innings. Considering these statistics, I am inclined to rely on the Mariners' lineup and bullpen to have a significant impact on the game's outcome. The likelihood of a close contest is high, and I am hesitant to place a bet on the runline. The Royals have faced challenges on offense throughout the season, particularly evident in their recent statistics where they have struggled with a .622 OPS and 72 wRC+ against right-handed pitchers in the past 10 days. In contrast, the Mariners have excelled with a .755 OPS and 114 wRC+ against right-handed pitchers.

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