Giants vs Mariners Prediction 7/19/26 MLB Picks Today

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.

Seattle Mariners Preview

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.

San Francisco Giants Preview

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.

San Francisco Giants @ Seattle Mariners Betting Trends: July 19, 2026

• Probable Starting Pitcher: Logan Gilbert      Record this season: 7-6      ERA: 3.32
• Home Record: 6-3
• Last 5 against Giants: 1-0

Why the Seattle Mariners will win

• The Giants have lost each of their last seven day games against American League opponents following a road loss.
• The Mariners have won each of their last eight games as home favorites after going to extra innings.
• The Mariners have covered the run line each of their last six day games against teams that held a losing record.
• The Giants have failed to cover the run line in each of their last five day games after going to extra innings.
• The Giants have trailed after 3 innings in each of their last four day games.
• The Giants have lost the first inning in three of their last four day games.
• The Mariners have led after 5 innings in each of their last four home day games.

• Probable Starting Pitcher: Robbie Ray      Record this season: 8-6      ERA: 3.38
• Road Record: 3-5
• Last 5 against Mariners: 2-0

Why the San Francisco Giants will win

• The Mariners have lost each of their last six games as favorites against the Giants following a win.
• The Giants have won each of their last four games as underdogs against the Mariners following a road loss.
• The underdogs have covered the run line in each of the Giants’ last 11 games at T-Mobile Park.
• The Mariners have failed to cover the run line in each of their last seven games as favorites against National League opponents.
• The Mariners have trailed after 5 innings in each of their last 10 games against National League opponents.
• The Mariners have trailed after 3 innings in five of their last six games against National League opponents.

Total Runs Facts

• Each of the Giants’ last five games following an extra innings loss have gone UNDER the total runs line.
• Four of the Mariners’ last five day games as favorites have gone UNDER the total runs line.
• There has been no run scored during the first inning in each of the Mariners’ last 13 games.
• There has been no run scored during the first inning in each of the Giants’ last six games against AL West opponents.

Seattle Mariners Player Prop Facts

• Logan Gilbert has recorded a win in each of his last five home appearances against opponents that held a losing record.
• Logan Gilbert has recorded seven or more strikeouts in each of his last seven home appearances against opponents that held a losing record.
• Randy Arozarena has recorded at least one hit in each of his last nine Sunday appearances against NL teams that held a losing record.
• Dominic Canzone has hit a home run in each of his last two appearances in day games against teams that held a losing record.

San Francisco Giants Player Prop Facts

• Willy Adames has hit a home run in each of the Giants’ last three games against AL West opponents.
• Robbie Ray has recorded a win in four of his last five appearances.
• Robbie Ray has recorded six or more strikeouts in each of his last seven appearances in day games against teams that held a losing record.
• Heliot Ramos has recorded at least one hit in each of his last 13 road appearances against opponents that held a losing record.
• Luis Arraez ranks 2nd in the league in Hits (121) this season.

Matchup/League Facts

• The Mariners rank 1st in the league for walks allowed this season (247).
• The Mariners rank 1st in the league for walks allowed this season (247).
• The Giants rank 30th in the league for walks this season (245).
• The Giants rank 30th in the league for walks this season (245).

Giants vs Mariners Prediction

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.