MATCHUP	San Francisco Giants	Seattle Mariners
Team Records	42-56	49-50
Where	T-Mobile Park, Seattle, Washington
When	Sunday, July 19, 2026
Time	04:10 PM EDT
TV	ESPN Unlmtd

The San Francisco Giants and the Seattle Mariners meet Sunday 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 San Francisco Giants vs. Seattle Mariners prediction.

Starting Pitching Matchup

The San Francisco Giants will send out Robbie Ray for the start here and Ray is 8-6 with a 3.38 ERA and 90 strikeouts this season. Logan Gilbert will start for the Mariners and is 7-6 with a 3.32 ERA and 119 strikeouts this season.

San Francisco Giants Recap

The San Francisco Giants come into this game looking to bounce back from a 4-3 loss at the hands of the Seattle Mariners last time out to sit at 42-56 this season. After this series, the Giants will head on the road for a series against the Kansas City Royals.

Giants Have Three-Game Win Streak Snapped

Luis Arraez has 121 hits with 21 doubles, 7 triples and 35 RBIs while Willy Adames has 84 hits with 21 doubles, 17 home runs and 42 RBIs along with 110 strikeouts. Matt Chapman has 72 hits with 18 doubles, a triple, 7 home runs and 42 RBIs and Jung Hoo Lee has 103 hits with 21 doubles and 33 RBIs. Heliot Ramos has 64 hits with 13 doubles, 8 home runs and 28 RBIs this season. Rafael Devers also has 92 hits with 25 doubles, 20 home runs and 53 RBIs but also has 117 strikeouts this season.

Seattle Mariners Recap

The Seattle Mariners come into this game looking to add on to their win over San Francisco from Saturday to sit at 49-50 on the year. After this series, the Mariners will take on the Cincinnati Reds in a matchup at home.

Mariners Alternate Wins & Losses In 4 Straight

Luke Raley has 14 home runs and 36 RBIs this season. Cole Young’s added 90 hits with 14 doubles, a triple, 12 home runs and 46 RBIs and Cal Raleigh has 41 hits with 7 doubles, 9 home runs and 29 RBIs as well this season. Randy Arozarena has 93 hits with 21 doubles, 11 home runs and 45 RBIs as well on the year. Josh Naylor also has 90 hits with 8 home runs and 36 RBIs as well on the year. Julio Rodriguez has also added 89 hits with 15 doubles, 14 home runs and 41 RBIs.

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 Mariners have led after 5 innings in each of their last four home day games.
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.

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 3 innings in five of their last six games against National League opponents.
The Mariners have trailed after 5 innings in each of their last 10 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).