Seattle Mariners vs Philadelphia Phillies Prediction, Preview and Odds - 08/19/2025

Game Time: 6:45 pm ET, Tuesday, August 19, 2025

Venue:  Citizens Bank Park, Philadelphia, PA 

Where to Watch:  ROOT Sports NW, NBCS-P

DraftKings:  Moneyline odds:  Mariners +138, Phillies -169; Over/Under:  8 runs

Bet365:  Moneyline odds:  Mariners +140, Phillies -170; Over/Under:  8 runs

BetMGM:  Moneyline odds:  Mariners +140, Phillies -170; Over/Under:  8 runs

Seattle Mariners:  68-57 (2nd place, AL West)

Philadelphia Phillies:  71-53 (1st place, NL East)

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Seattle Mariners:  6-4 last 10

Philadelphia Phillies:  6-4 last 10

The Mariners are entering this series off a loss and lost their 3-game series against the New York Mets 2-1 in their last series. They enter this game with a 68-57 record overall and have a road record of 31-32. This is the 2nd game of a 3-game series with the Phillies on Tuesday with the series opener still to be played on Monday. Their offense ranks 12th in the MLB with a .730 OPS. Logan Gilbert is their starting pitcher on Monday while Bryce Miller is making his start in this game on Tuesday. He is 2-5 with a 5.73 ERA this season. His team lost 3 of their last 4 games this season with him making an appearance. In his last MLB regular season start, he allowed 5 ER, 1 HR, and 1 BB with 2 SO on 7 hits through 5 IP against the Los Angeles Angels.

The Phillies are entering this series off a win and split their 4-game series against the Washington Nationals 2-2 in their last series. They enter this game with a 71-53 record overall and have a home record of 37-21. This is the 2nd game of a 3-game series with the Mariners on Tuesday with the 1st game of this series still to be played on Monday. Their offense ranks 9th in the MLB with a .738 OPS. Ranger Suárez is their starting pitcher on Monday while Cristopher Sánchez is making his start in this game on Tuesday. He is 11-4 with a 2.45 ERA this season. His team won 2 of their last 3 games this season with him making an appearance. In his last MLB regular season start, he allowed 3 earned runs, 0 homers, and 1 walk with 6 strikeouts on 7 hits through 6 innings pitched against the Cincinnati Reds.

The current betting odds have the Phillies listed as a favorite in this game according to Draftkings Sportsbook. The Phillies have looked great in their games this season with their 71-53 record overall which has them right at the top of the NL East. They have looked great in their own ballpark this year too with their 37-21 home record. Meanwhile, the Mariners have looked good in their games this season with their 68-57 record overall which has them right near the top of the AL West. They haven't been a great road team though with their 31-32 road record this season. Both of these teams are 6-4 in their last 10 games, but the Mariners are coming off a series loss and have been starting to cool off now. The Phillies also have the better pitching matchup in this one and they can take advantage of that. Sanchez is on the mound for the Phillies in this one and he has looked great this season. He is 11-4 with a 2.45 ERA and has been one of their best starters this year. He did give up 3 earned runs in his last start, but that hasn't been a common theme for him this year and the team has still won 2 of their last 3 games with him starting too. The Mariners are going with Miller in this one and he hasn't looked great this year. He is 2-5 with a 5.73 ERA and has been giving up quite a few runs in his starts this year. He is coming off another bad start in which he gave up 5 earned runs and the team has lost 3 of their last 4 games with him starting too. The Phillies can take advantage of the way Miller has been pitching lately and the Phillies have looked like the better team lately too. The best way to place a bet here is on the Phillies to win this game. 

Mariners Phillies Prediction:  Our MLB Pick for Tuesday, August 19, 2025 (6:45 pm ET start time) is Phillies 6 Mariners 2.

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Seattle Mariners: 19-20 (-9.7 units) on the moneyline against NL East opponents. 241-208 (-9.8 units) on the moneyline in all games. 110-115 (-13.1 units) on the moneyline in road games. 28-18 OVER as an underdog of +125 to +175.

Philadelphia Phillies: 266-200 (+4.9 units) on the moneyline in all games. 148-83 (+23.7 units) on the moneyline in home games. 214-131 (+12.6 units) on the moneyline as a favorite of -110 or higher. 14-9 OVER at home when the total is 8 to 8.5.

Seattle Mariners:  L. Evans (SP) Fifteen Day IL - Elbow. T. Thornton (RP) Fifteen Day IL - Achilles. B. Miller (SP) Fifteen Day IL - Elbow. G. Santos (RP) Sixty Day IL - Knee. V. Robles (RF) Sixty Day IL - Shoulder. R. Bliss (2B) Sixty Day IL - Biceps.

Philadelphia Phillies:  Z. Wheeler (SP) Fifteen Day IL - Blood Clot.

“I love watching the home runs. I love watching him hold the trident. I love all our guys to hold that trident. Again, just some really nice swings from Cal again tonight. But no, I don’t think I’ll ever get tired of that.” - Dan Wilson after his team’s loss against the Mets in their game on Sunday.

"When guys are lofting balls to center field and the opposite-field gap I feel like they are right on it. That's what he was doing two days ago. It was a good showing for him. I like where he is at right now." - Rob Thomson after his team’s win against the Nationals in their game on Sunday.

Randy Arozarena (R) LF

Cal Raleigh (S) C

Julio Rodríguez (R) CF

Josh Naylor (L) 1B

Eugenio Suárez (R) 3B

Jorge Polanco (S) DH

Dominic Canzone (L) RF

J.P. Crawford (L) SS

Cole Young (L) 2B

Trea Turner (R) SS

Kyle Schwarber (L) DH

Bryce Harper (L) 1B

Alec Bohm (R) 3B

Nick Castellanos (R) RF

Harrison Bader (R) CF

Weston Wilson (R) LF

Bryson Stott (L) 2B

Rafael Marchán (S) C

Batting Average:  Dominic Canzone (.287)

Hits:  Julio Rodríguez (133)

Home Runs:  Cal Raleigh (47)

RBI:  Cal Raleigh (102)

Stolen Bases:  Randy Arozarena (24)

Wins:  Bryan Woo (10)

Saves:  Andrés Muñoz (29)

ERA:  Sauryn Lao (0.00)

Batting Average:  Trea Turner (.291)

Hits:  Trea Turner (147)

Home Runs:  Kyle Schwarber (43)

RBI:  Kyle Schwarber (102)

Stolen Bases:  Trea Turner (28)

Wins:  Cristopher Sánchez (11)

Saves:  Jordan Romano (8)

ERA:  Jhoan Duran (0.00)

Managers:

Seattle Mariners: Dan Wilson (2nd season)

Philadelphia Phillies: Rob Thomson (4th season)