San Francisco Giants vs Seattle Mariners Picks and Prediction for Friday, July 17, 2026
Use Code SSWC The San Francisco Giants visit the Seattle Mariners at T-Mobile Park in Seattle, Washington, on Friday, July 17, 2026, with the first pitch scheduled for 10:10 p.m. ET. The game will be televised on MLB.TV. San Francisco enters the series opener at 41-55 overall and 19-30 on the road, while Seattle is 48-49 overall and 27-20 at home. ESPN Analytics gives the Giants a 39.8% chance to win and the Mariners a 60.2% chance. At the time of this writing the odds were not released. Be sure to check out our free MLB Picks.
Starting Pitchers for Giants vs Mariners
Landen Roupp is scheduled to start for San Francisco, while Seattle has not settled on its starting pitcher. Roupp enters the matchup with a 6-8 record, 4.27 ERA, and 1.31 WHIP through 97 innings. He has allowed 85 hits, 42 walks, and seven home runs while recording 104 strikeouts. Those numbers provide San Francisco’s established starting profile for Friday’s series opener.
San Francisco Carries Recent Momentum on the Road
San Francisco enters Friday’s matchup with a 41-55 overall record and a 19-30 mark away from home. The Giants have won three of their last five games, recently defeating Colorado by scores of 3-1, 4-2, and 8-2. San Francisco recently lost 4-3 to the Rockies and 10-0 to Toronto. The Giants have held their opponent to two runs or fewer in each of their three recent victories.
The Giants are batting .256 with 840 hits, 395 runs, and 106 home runs. They have produced a .310 on-base percentage and a .420 slugging percentage. San Francisco’s pitching staff owns a 4.46 ERA and 1.37 WHIP, with 361 walks and 732 strikeouts. Opponents are batting .248 against the Giants, who have compiled a 23-36 record in night games.
Sign Up Get $30 Premium Picks Credit + Exclusive Offers
Subscribe Now
San Francisco’s offensive contact and power numbers are its strongest advantages. The Giants hold the higher batting average, hit total, and slugging percentage in this matchup. They have recorded 104 more hits than Seattle, while their .420 slugging percentage is 40 points higher. The primary concern is the team’s pitching profile and road record. San Francisco has the higher ERA, WHIP, and opponent batting average while sitting 11 games below .500 away from home.
Seattle Returns Home Searching for a Turnaround
Seattle enters the series opener with a 48-49 overall record and a 27-20 mark at T-Mobile Park. The Mariners have lost four of their last five games, recently falling to Tampa Bay by scores of 6-1 and 7-2 and losing to Miami 8-4 and 2-0. Seattle’s lone victory during the stretch was an 8-2 win over Tampa Bay. The Mariners were held to four runs or fewer in all five games.
The Mariners are batting .230 with 736 hits, 392 runs, and 115 home runs. Seattle has posted a .310 on-base percentage and a .380 slugging percentage. Its pitching staff carries a 3.61 ERA and 1.18 WHIP, with 242 walks and 825 strikeouts. Opposing batters are hitting .240 against the Mariners, who have recorded a 28-33 mark in night games.
Pitching is Seattle’s clearest strength. The Mariners have a team ERA that is 0.85 lower than San Francisco’s mark and a WHIP that is 0.19 lower. Seattle has also issued 119 fewer walks while recording 93 more strikeouts. Its 27-20 home record provides another important advantage. The weakness is recent offensive production, as the Mariners have scored only 15 total runs over their last five games and were shut out once.
San Francisco Giants vs Seattle Mariners Picks and Prediction
San Francisco Giants vs Seattle Mariners Pick
- Pick: Seattle Mariners Moneyline
Seattle is my moneyline selection. The Mariners own the better overall record, a winning home mark, and a 60.2% matchup predictor probability. Seattle also holds clear advantages in team ERA, WHIP, walks, strikeouts, and opponent batting average. San Francisco has won three of its last five and leads several offensive categories, so the Giants bring some recent momentum into the matchup. However, Seattle’s season-long pitching advantages and stronger home performance make the Mariners the preferred side.
San Francisco Giants vs Seattle Mariners Total Pick
- Take the under if the total is set at 8.0.
I would take the under at 8.0. Seattle has scored four runs or fewer in five consecutive games, while San Francisco’s last four games have each finished with seven or fewer combined runs. The Mariners also carry a 3.61 team ERA and 1.18 WHIP, and opponents are batting only .240 against them. San Francisco’s scheduled starter has allowed just seven home runs through 97 innings. The supplied recent results and Seattle’s pitching numbers support a lower-scoring prediction.
Final Score Prediction
Final Score Prediction: Seattle Mariners 4 – San Francisco Giants 3
Never Tried Picks and Parlays? Now Is Your Chance
- Get your first daily picks package for ONLY $1 using coupon code BUCK
- If the pick loses, we credit your account with 3 Flex Picks
- If the pick wins, we still give you 1 Flex Pick on the house
- Win or lose, you walk away ahead. One dollar. No catch.
Up To $1500 in Bonus Bets Paid Back if your First Bet Does Not Win
New Users – Bet $5 Get $200 in Bet Reset Tokens for 5 Days
