Seattle Mariners vs Athletics Picks and Prediction for Sunday September 13 2026

The Seattle Mariners (69-79) face off against the Athletics (60-88) at Sutter Health Park in Sacramento, California on Sunday. Get involved in the action with our free MLB picks.

Seattle vs. Athletics Game Information

• September 13, 2026
• 4:05 PM EST
• Sutter Health Park
• MLB.TV/Mariners.TV/NBC Sports California/Fubo

Athletics Form & Recent Results

The Athletics step into this matchup riding a wave of recent momentum, having secured back-to-back victories and putting together a solid run of three wins over their last five games leading into Saturday's game. This recent surge was highlighted by a thrilling 6-5 extra-innings victory against the Mariners in a ten-inning thriller on Friday night, giving the home crowd plenty to cheer about. Shortstop Donovan Walton was absolute magic at the plate during that game, putting on a spectacular show by going 3-for-5 with a pair of singles before cementing his hero status with a dramatic, game-winning walk-off home run. Walton finished the night with a run scored and two crucial RBIs. On the mound, starting pitcher Jeffrey Springs provided a steady presence for the A’s, grinding through five complete innings of work. While he navigated traffic by giving up six hits, walking two batters, and striking out one, he managed to keep the damage to just two earned runs. As a collective unit, the A’s offense was absolutely locked in, explosive for fourteen hits, launching two home runs, and racking up twenty-two total bases. Meanwhile, the pitching staff showed great command by pounding the zone for one hundred one strikes, even while scattering ten hits to a resilient Seattle lineup.

So far this season, this late-season push is all about pride and building a culture for the future, as the Athletics have long been eliminated from playoff contention during a tough rebuilding year. Currently pacing themselves toward a modest finish of just 66 wins for the season, the team no longer has the postseason to play for, but they are fully focused on playing the role of spoiler and finishing the year on a high note. With the long baseball season finally winding down to its closing chapters, every single game is an opportunity for young players to prove themselves and for the clubhouse to salvage some positive momentum. They will look to keep the good vibes rolling right into the weekend, fully intent on securing yet another satisfying victory over their division rivals in the series finale against the Mariners on Sunday afternoon.

Seattle Form & Recent Results

Seattle comes into this matchup looking to bounce back after a tough loss, as the Mariners are currently riding a one-game losing streak. Before that defeat, though, they had been playing fairly solid baseball, winning three of their previous five games heading into Saturday. Their most recent setback came Friday night on the road against the Athletics, where Seattle fell 6-5 in extra innings on a walk-off. It was a frustrating ending for the Mariners, especially after they had fought hard to stay in the game. One of the bright spots in the loss was Lazaro Montes, who came off the bench as a pinch-hitting designated hitter and made an impact. Montes finished 1-for-3 with a home run, one run scored, and two RBIs, giving Seattle a much-needed offensive spark.

Even though the Mariners came up short, their pitching staff did some good things as well. Seattle’s pitchers combined to strike out six Athletics hitters while issuing only two walks, which shows they were mostly around the strike zone and avoided giving away too many free baserunners. Still, the end result was another disappointing loss in what has become a difficult season. At this point, Seattle’s postseason hopes are hanging by a thread, if not already basically gone, as the team is on pace to finish with around 76 wins. With the playoff picture looking bleak, the Mariners will now shift their focus to finishing the series on a stronger note. After the heartbreak of Friday night’s walk-off loss, they’ll be looking for a bit of revenge when they face the A’s again in Sacramento for the series finale on Sunday.

Key Stats

• Seattle’s Randy Arozarena this season: 22 HRs, 67 RBI, .272 AVG
• Athletics’ Nick Kurtz this season: 21 HRs, 69 RBI, .256 AVG

Seattle vs. Athletics Picks and Prediction

The A’s pulled off a dramatic walk-off win in extra innings Friday night, handing the Mariners a tough loss. Neither team is headed to the playoffs this season, but both are already looking ahead and trying to build toward a better year. Seattle will send Bryce Miller to the mound, who enters at 4-9 with a 4.22 ERA. He’ll face A's starter Jacob Lopez, who is 6-4 with a 4.78 ERA. Final Score Prediction, the Athletics win 9-5.