Seattle Mariners vs Philadelphia Phillies Prediction 8/25/26 MLB Picks Today

The Philadelphia Phillies and the Seattle Mariners meet Tuesday in MLB action from T-Mobile Park. We will look at this from a betting perspective and determine the best bets for this game. Here’s a Philadelphia Phillies vs. Seattle Mariners prediction.

Starting Pitching Matchup

The Philadelphia Phillies will send out Aaron Nola for the start here and Nola is 5-9 with a 5.12 ERA and 146 strikeouts this season. George Kirby will start for Seattle and is 8-10 with a 4.18 ERA and 117 strikeouts this season.

Philadelphia Phillies Recap

The Philadelphia Phillies come into this game looking to bounce back from a 9-2 loss at the hands of the Mariners last time out to sit at 73-59 this season. After this series, the Phillies will head on the road for a series against the Angels.

Phillies Have Nine-Game Win Streak Snapped

Entering Monday, Kyle Schwarber has 114 hits with 15 doubles, 39 home runs and 78 RBIs. Brandon Marsh has 125 hits with 18 doubles, 17 home runs and 55 RBIs while Justin Crawford also has 94 hits with 17 doubles, 4 triples, 2 home runs and 32 RBIs. Trea Turner has 127 hits with 22 doubles, 17 home runs and 49 RBIs and Bryce Harper’s added 119 hits with 25 doubles, 26 home runs and 75 RBIs this season.

Seattle Mariners Recap

The Seattle Mariners will be out to add on to their win over the Phillies from Monday to sit at 63-69 on the year. After this series, the Mariners will head on the road for a series against the Toronto Blue Jays.

Mariners Win 3 Of Last 4

Going into Monday, Luke Raley has 15 home runs and 39 RBIs this season. Cole Young’s added 120 hits with 15 doubles, 3 triples, 15 home runs and 56 RBIs and Cal Raleigh has 55 hits with 8 doubles, 14 home runs and 47 RBIs as well this season. Randy Arozarena has 126 hits with 26 doubles, 20 home runs and 58 RBIs as well on the year. Josh Naylor also has 127 hits with 18 doubles, 10 home runs and 46 RBIs as well on the year. Julio Rodriguez has also added 117 hits with 18 doubles, 19 home runs and 53 RBIs.

Philadelphia Phillies @ Seattle Mariners Betting Trends: August 25, 2026

• Probable Starting Pitcher: George Kirby      Record this season: 8-10      ERA: 4.18
• Home Record: 5-4
• Last 5 against Phillies: 0-1

Why the Seattle Mariners will win

• The home team has won each of the Phillies’ last seven games.
• The Phillies have lost each of their last eight games as road underdogs against AL West opponents following a loss.
• The home team has covered the run line in each of the last four games between the Phillies and Mariners.
• The Phillies have failed to cover the run line in five of their last six games against AL West opponents that held a losing record.
• The Phillies have trailed after 5 innings in each of their last four games against AL West opponents that held a losing record.
• The Mariners have led after 3 innings in each of their last four games as favorites.
• The Mariners have won the first inning in four of their last five home games.

• Probable Starting Pitcher: Aaron Nola      Record this season: 5-9      ERA: 5.12
• Road Record: 4-5
• Last 5 against Mariners: 1-1

Why the Philadelphia Phillies will win

• The Mariners have lost four of their last five games as favorites against NL East opponents.
• The Phillies have won nine of their last 10 games.
• The Mariners have failed to cover the run line in 15 of their last 16 games as favorites.
• The Phillies have covered the run line in eight of their last nine games as road underdogs against AL West opponents.
• The Phillies have led after 5 innings in each of their last six Tuesday games against AL opponents that held a losing record.
• The Phillies have led after 3 innings in each of their last six Tuesday games against AL opponents that held a losing record.
• The Phillies have won the first inning in four of their last five night games against AL West opponents that held a losing record.

Total Runs Facts

• Each of the Mariners’ last seven games have gone OVER the total runs line.
• Each of the Phillies’ last six games against AL West opponents have gone OVER the total runs line.
• There has been at least one run scored in the first inning in each of the Mariners’ last 10 games.
• There has been at least one run scored in the first inning in each of the Phillies’ last six games as underdogs.

Seattle Mariners Player Prop Facts

• Julio Rodriguez has hit a home run in each of the Mariners’ last two games against the Phillies.
• George Kirby has recorded five or more strikeouts in each of his last four appearances with the Mariners as favorites against NL opponents.
• Josh Naylor has recorded at least one hit in each of the Mariners’ last 11 night games against NL opponents that held a winning record.

Philadelphia Phillies Player Prop Facts

• J.T. Realmuto has hit a home run in three of the Phillies’ last four games against the Mariners.
• Aaron Nola has recorded six or more strikeouts in each of his last 11 appearances in night games against AL teams that held a losing record.
• Bryce Harper has recorded at least one hit in each of his last 10 appearances against the Mariners after playing the previous day.
• Luis Arraez ranks 1st in the league in Hits (160) this season.

Matchup/League Facts

• The Mariners rank 30th in the league for doubles this season (158).
• The Mariners rank 29th in the league for runs scored this season (522).
• The Phillies rank 1st in the league for strikeouts this season (1302).
• The Phillies are one of only three teams in the league to rank top 10 in both strikeouts and walks allowed this season.

Philadelphia Phillies vs. Seattle Mariners Prediction

I’m backing the Mariners here. Not often I’ve backed Seattle given the inconsistency of this offense, but the Mariners broke through in a big way on Monday against a much better starting option in Zack Wheeler and I look for them to do the same against Aaron Nola, who has been much more susceptible as a starting option this season. George Kirby’s been solid, but like all Mariners starting pitchers, it’s about whether or not they get the run support and I think Kirby does here so give me Seattle.