The Seattle Mariners (48-49) host San Francisco (41-55) for a three-game series to open the second half of the year. Seattle finished the first half of the season 1.5 games back of the AL West lead, while San Francisco is 10.5 games out of the Wild Card.
Seattle finished the first half of the season with a .230 batting average (T-27th) and the fifth-fewest runs scored (392). The pitching has carried the Mariners as times this season, ranking sixth in the ERA (3.61), fourth in WHIP (1.18), and the fewest home runs allowed (90).
San Francisco ended the first half of the year on a good note with a 3-1 record over the last four games, but the season has been all downhill. The Giants’ offense ranks fourth in batting average (.256), but 22nd in ERA (4.46) and 26th in saves (19). This is the first meeting of the season between the Giants and Mariners. San Francisco won all three games last season, outscoring Seattle, 20-13.
Let’s dive into the matchup and find a sweat or two.
We’ve got all the info and analysis you need to know ahead of the game, including the latest info on the how to catch first pitch, odds, recent team performance, player stats, and of course, our predictions, picks & best bets for the game from our modeling tools and staff of experts.
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Game details & how to watch Giants at Mariners
- Date: Friday, July 17, 2026
- Time: 10:10 PM EST
- Site: T-Mobile Park
- City: Seattle, WA
- Network/Streaming: MLB TV
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Odds for the Giants at the Mariners
The latest odds as of Friday:
- Moneyline: San Francisco Giants (+138), Seattle Mariners (-167)
- Spread: Mariners -1.5 (+138), Giants +1.5 (-167)
- Total: 7.0
Probable starting pitchers for Giants at Mariners
- Friday’s pitching matchup (July 17): Landen Roupp vs. Bryce Miller
- Mariners: Bryce Miller
2026 stats: 57.2 IP, 4-3, 2.18 ERA, 0.83 WHIP, 65 K, 9 BB
2026 Stats: 97.0 IP, 6-8, 4.27 ERA, 1.31 WHIP, 104 Ks, 42 BB
Who’s Hot? Who’s Not
- The Giants’ Luis Arraez is hitting .330 with 119 hits, 4 home runs and 35 RBI over 361 at-bats
- The Giants’ Drew Gilbert is hitting .237 with 45 hits and 37 strikeouts over 190 at-bats
- The Mariners’ Randy Arozarena is hitting .286 with 93 hits, 11 home runs, and 45 RBI over 325 at-bats
- The Mariners’ JP Crawford is hitting .226 with 62 hits and 69 strikeouts over 284 at-bats
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Top betting trends & insights to know ahead of Giants at Mariners
- Seattle is 38-59 ATS, ranking second-worst
- San Francisco is 45-51 ATS
- Seattle is 47-46-4 to the Over
- San Francisco is 44-44-8 to the Over
- Seattle is 19-28 ATS at home, ranking sixth-worst
- San Francisco is 22-27 ATS on the road, ranking sixth-worst
Expert picks & predictions for tonight’s game between the Mariners and the Giants
Rotoworld Bet Best Bet
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Our model calculates projections around each moneyline, spread and over/under bet for every game on the MLB calendar based on data points like past performance, player matchups, ballpark information and weather forecasts.
Once the model is finished running, we put its projection next to the latest betting lines for the game to arrive at a relative confidence level for each wager.
Here are the best bets our model is projecting for Friday’s game between the Mariners and the Giants:
- Moneyline: NBC Sports Bet is recommending a play on the Mariners on the Moneyline.
- Spread: NBC Sports Bet is leaning towards a play ATS on the Mariners at -1.5.
- Total: NBC Sports Bet is recommending a play on the Over on the Game Total of 7.0
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