San Francisco Giants at Seattle Mariners

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SF	0	0	1	0	0	2	0	0	0	0	3	7	1
SEA	0	0	0	0	0	0	3	0	0	1	4	3	1

First pitch is set for 5:08 PM PT, and the mound matchup is a study in contrasts. Logan Webb, fresh off his third straight All-Star nod, gets the ball for San Francisco looking to build on a red-hot stretch since returning from a knee issue. Across from him is Bryan Woo, who's flashed frontline stuff at times this year but hasn't strung together enough clean starts lately to match it.

Show fees

FINAL

Spread

ML

Total

Giants(42-55)

WWWLW

3

+1.5-153+147o6.5-135

Mariners(48-50)

LWLLL

4

-1.5+150-150u6.5+135

Best BetMariners -136

Pregame

The Mariners are priced as the favorite here, and that's the right shape of the bet even after getting run over on Friday. Woo has swing-and-miss stuff that can flip a game quickly, and Seattle at home against a Giants team playing out a lost season is the more defensible outright pick. San Francisco's price reflects real value given how they've played, but this stays a home lean.

Woo's actually got the raw numbers to make this a real puzzle for Giants hitters — his FIP ranks among the better marks in the American League — but the results haven't matched the process. He's allowed at least 3 earned runs in 5 of his last 8 outings, and after the Mariners leaned on a six-man rotation coming out of the break, this is his first look at a Giants lineup that torched Seattle's staff for 7 runs less than 24 hours earlier. Webb, meanwhile, was named NL Pitcher of the Month for June and has posted a 2.18 ERA over his seven starts since coming back, even after taking the loss in his last outing against Toronto.

Logan Webb

(6-7)·3.93 ERA

Jul 8 vs Blue Jays

L

7.0IP

5ER

2K

2BB

106P

07/18 Lineup

Bryan Woo

(7-8)·4.56 ERA

Jul 7 @ Marlins

ND

5.0IP

3ER

5K

1BB

87P

07/18 Lineup

Seattle's lineup is banged up in ways that matter. Julio Rodriguez has been working back from a concussion, and with Brendan Donovan and Rob Refsnyder both out on rehab assignments, the middle of the order isn't at full strength. San Francisco has its own absences — Matt Chapman, Jonah Cox and Harrison Bader are all out — but the Giants have managed to win with the guys who are in the lineup, and Friday's game was Exhibit A.

San Francisco Giants

(42-55)

Jul 18W@ Mariners7-0

Jul 12Wvs Rockies3-1

Jul 11Wvs Rockies4-2

Jul 11Lvs Rockies3-4

Jul 10Wvs Rockies8-2

Seattle Mariners

(48-50)

Jul 18Lvs Giants0-7

Jul 12W@ Rays8-2

Jul 11L@ Rays1-6

Jul 10L@ Rays2-7

Jul 9L@ Marlins4-8

That Friday game is still the loudest thing on either team's résumé right now. Willy Adames hit a grand slam, Austin Eldridge added a two-run shot, and Landen Roupp threw 7 shutout innings as the Giants blanked the Mariners 7-0. A win Saturday would give San Francisco its first 4-game winning streak of the season — notable for a club that's spent most of 2026 stuck in fourth place in the NL West.

San Francisco Giants

(10)

• 10-Day-ILMatt Chapman (3B) — Chapman (abdomen) was cleared to begin a swinging progression Friday, Alex Pavlovic of NBC Sports Bay Area reports.07/18
• 10-Day-ILVictor Bericoto (RF) — The Giants placed Bericoto on the 10-day injured list Friday with a left oblique strain.07/10
• 10-Day-ILJonah Cox (CF) — Cox went 3-for-3 with a solo home run and an additional run scored in Friday's 18-3 win over the Cubs.07/08
• 10-Day-ILHarrison Bader (CF) — Bader (foot) will take batting practice Monday and run the bases Tuesday, Justice delos Santos of The San Jose Mercury News reports.07/06
• 15-Day-ILMatt Gage (RP) — Gage will be re-evaluated in one month after an MRI revealed a moderate left flexor strain, Alex Pavlovic of NBC Sports Bay Area reports.07/08
• 60-Day-ILJoel Peguero (RP) — Peguero (hamstring) threw 30 pitches during a bullpen session Monday, Evan Webeck of the California Post reports.06/29
• 60-Day-ILRowan Wick (RP) — The Giants placed Wick (elbow) on the 60-day injured list Sunday, Justice delos Santos of The San Jose Mercury News reports.05/08
• 60-Day-ILHayden Birdsong (RP) — Birdsong underwent successful UCL reconstruction surgery on his right elbow Wednesday, Susan Slusser of the San Francisco Chronicle reports.05/08
• 60-Day-ILRandy Rodriguez (RP) — The Giants placed Rodriguez (elbow) on the 60-day injured list Tuesday, Justice delos Santos of The San Jose Mercury News reports.05/08
• 60-Day-ILJose Butto (RP) — The Giants transferred Butto (arm) to the 60-day injured list Tuesday.05/08

Seattle Mariners

(9)

• Day-To-DayEmerson Hancock (SP) — Hancock had X-rays come back negative on his palm and middle finger after leaving Sunday's start against the Giants, Ryan Divish of The Seattle Times reports.07/12
• 7-Day ILJulio Rodriguez (CF) — Rodriguez (concussion) is not in the Mariners' starting lineup against the Giants on Friday.07/17
• 10-Day-ILRob Refsnyder (DH) — Refsnyder (knee) will embark on a rehab assignment with Triple-A Tacoma on Saturday, Tim Booth of The Seattle Times reports.07/17
• 10-Day-ILBrendan Donovan (3B) — Donovan (groin) will shift his rehab assignment to Triple-A Tacoma on Friday, Shannon Drayer of SeattleSports.com reports.07/17
• 15-Day-ILMatt Brash (RP) — General manager Justin Hollander said Tuesday that Brash was diagnosed with a Grade 1 strain in his right lat, Shannon Drayer of SeattleSports.com reports.06/16
• 60-Day-ILCooper Criswell (RP) — Seattle transferred Criswell (shoulder) to the 60-day injured list Friday.07/04
• 60-Day-ILCarlos Vargas (RP) — Mariners general manager Justin Hollander said Tuesday that Vargas (lat) recently began a throwing program and could be ready to return from the 60-day injured list around the Aug. 3 trade deadline, Zac Hereth of 710 AM Seattle Sports reports.06/17
• 60-Day-ILWill Wilson (3B) — Wilson (thumb) has gone 3-for-9 with two RBI and a 1:2 BB:K in his first three rehab games between High-A Everett and Triple-A Tacoma.06/17
• 60-Day-ILLogan Evans (SP) — The Mariners placed Evans (elbow) on the 60-day injured list Monday.05/08

None of that erases the standings gap. The Giants are 42-55 and playing out the string on a lost season in a lot of ways, while the Mariners at 48-50 are still trying to stay in the wild-card conversation. But right now, momentum is squarely with the visitors. Seattle's lost 4 of its last 5, and a second straight home loss to a sub-.500 Giants team would sting a lot more than the standings line suggests.