Winning Probability and Match Preview for Padres vs Mariners – 8/25/2025

San Diego Padres logo

San Diego Padres

@
Seattle Mariners logo

Seattle Mariners

+110O/U: 8.5
(-110/-110)
-130

As the Seattle Mariners prepare to host the San Diego Padres at T-Mobile Park on August 25, 2025, both teams come in with solid records and aspirations for postseason contention, though neither is in a comfortable position. The Mariners currently sit at 70-61, enjoying an above-average season, while the Padres are slightly ahead at 74-57, having a good year. This matchup marks the first game of the series and follows a recent victory for the Mariners, who triumphed over the Padres 11-4 in their last outing.

The Mariners will send Bryce Miller to the mound, who has had a rocky season with a 2-5 record and a troubling 5.87 ERA. Despite being ranked as the 142nd best starting pitcher in MLB, projections suggest he may have been unlucky, as his xFIP is lower than his ERA, indicating potential for improvement. Conversely, JP Sears for the Padres has struggled as well, ranking among the worst pitchers in MLB with an 8-10 record and a 4.94 ERA. However, his recent performance was more promising, allowing just one earned run in six innings during his last start.

Offensively, the Mariners rank 12th in MLB, bolstered by their powerful lineup that has hit the 3rd most home runs this season. This power could play a crucial role against Sears, who is a high-flyball pitcher. Meanwhile, the Padres, ranked 18th in offense, have a respectable batting average but are lacking in home runs, sitting 29th in that category.

With the Mariners’ bullpen ranked 5th and the Padres’ at 1st, late-game strategies will be pivotal. The game total is set at 8.5 runs, reflecting expectations for a competitive matchup, and the Mariners hold a slight edge in the moneyline at -125, suggesting they may be favored to win.

San Diego Padres Insights

  • JP Sears – Over/Under 4.5 Strikeouts (-120/-110)
    Because groundball hitters are less effective against groundball pitchers, JP Sears (42.2% GB% per the leading projection system, THE BAT) is well-situated in today’s game with 4 GB hitters in the opposing club’s projected lineup.
    Explain: This mostly has to do with the way the hitter’s swing plane interacts with the pitch trajectory, and it can create boosted performance across all categories and hidden value few are considering.
  • Ramon Laureano – Over/Under 0.5 Hits (-180/+135)
    Ramon Laureano is penciled in 7th on the lineup card today, which would be a downgrade from his 59% rate of hitting in the top-half of the batting order this season.
    Explain: The lower in the order a player bats, the fewer plate appearances he will get and the fewer opportunities he will get to hit the Over for every market. A player who hits lower in the order than he normally does may provide extra value opportunity since the market may be based on him hitting higher.
  • Gavin Sheets – Over/Under 0.5 Total Bases (-160/+125)
    Gavin Sheets pulls many of his flyballs (35.3% — 89th percentile) and is a great match for the park considering he’ll be hitting them towards the game’s 4th-shallowest RF fences today.
    Explain: This player’s skill set matches up particularly well with the park he’s in today, which may lead to better-than-usual performance.

Seattle Mariners Insights

  • Bryce Miller – Over/Under 3.5 Strikeouts (-130/+100)
    Bryce Miller’s curveball rate has spiked by 7.9% from last year to this one (4.4% to 12.3%) .
    Explain: Because curveballs are one of the most effective pitches to use, a pitcher who alters his pitch mix to use more of them will often see more success as a result.
  • Jorge Polanco – Over/Under 0.5 Total Bases (-135/+105)
    Jorge Polanco has seen a substantial gain in his exit velocity lately; just compare his 101.2-mph average over the last week to his seasonal 90.2-mph figure.
    Explain: Hitting the ball hard increases the chances of either a home run or the ball landing in fair territory for a hit before a fielder can get to it.
  • Seattle Mariners – Moneyline (-130)
    The Seattle Mariners projected lineup ranks as the 5th-best of all teams today in terms of overall offensive ability.
    Explain: A pitcher who faces a strong opposing offense will be more likely to underperform his usual performance, particularly in terms of hits and runs, in that game.

Betting Trends

  • Seattle Mariners – Over/Under 2.5 1st Five Innings (F5) Team Total (+105/-135)
    The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Under in 33 of their last 53 games (+10.55 Units / 17% ROI)
  • San Diego Padres – Over/Under 2.5 1st Five Innings (F5) Team Total (+120/-155)
    The San Diego Padres have hit the 1st Five Innings (F5) Team Total Under in 33 of their last 52 away games (+13.10 Units / 21% ROI)
  • Luis Arraez – Over/Under 0.5 Runs (+120/-155)
    Luis Arraez has hit the Runs Under in 17 of his last 20 games (+12.40 Units / 38% ROI)