San Francisco Giants (42-56) vs. Seattle Mariners (49-50) July 19, 2026 4:10 pm EDT The Line: Seattle Mariners -180 / San Francisco Giants 148; Over/Under: 7 (Get latest betting odds)
In this article, we will formulate a Giants vs Mariners Prediction for this MLB matchup on Sunday, July 19 th in the third game of this series. Let’s take a look at the prediction for this MLB matchup.
The Seattle Mariners have a 49-50 record this season and are sitting in the 2nd place of the AL West. They have a 28-21 home record and are coming off a 4-3 home win against the Giants. They will face the Reds and the Rangers next.
The Seattle Mariners have a .227 batting average this season, .309 OBP and .375 Slugging percentage. Seattle’s pitching staff has a 3.62 ERA and 1.18 WHIP. Randy Arozarena is the team’s best hitter with a .281 batting average. Cole Young leads the team in RBI with 46, while Dominic Canzone adds a team-high 15 home runs.
Logan Gilbert (R) is the projected starting pitcher for the Seattle Mariners, and he has a 7-6 record, 3.32 ERA and 0.99 WHIP.
The San Francisco Giants have a 42-56 record this season and are sitting in the 4th place of the NL West. They have a 20-31 away record and are coming off a 3-4 road loss against the Mariners. They will face the Royals and the Angels next.
The San Francisco Giants have a .256 batting average this season, .310 OBP and .419 Slugging percentage. San Francisco’s pitching staff has a 4.40 ERA and 1.35 WHIP. Luis Arraez is the team’s best hitter with a .327 batting average. Rafael Devers leads the team in RBI with 53, adding a team-high 20 home runs.
Robbie Ray (L) is the projected starting pitcher for the San Francisco Giants, and he has a 8-6 record, 3.38 ERA and 1.27 WHIP.
The Giants are 4-1 in their 5 meetings against the Mariners but have lost two of their last three visits in Seattle.
In this Giants vs Mariners Prediction, the Mariners are coming as -180 home favorites. The Mariners are being overvalued in this spot, but I prefer the total in this game. Two excellent pitchers who have a combined 6.70 ERA and two offenses that have been struggling lately will result in a low-scoring game. Both games in this series had 7 total runs and the Mariners have been bad against left-handed pitching, so I like the under in this one.