The 2026 Vedder Cup got off to a frustrating start for the Seattle Mariners, who fell 4-1 to the San Diego Padres in a game defined by missed opportunities. Despite a quality start from Bryan Woo, the Mariners' offense couldn't replicate the clutch hitting from their previous series, stranding key runners and failing to capitalize on solid at-bats.

Bryan Woo delivered his third consecutive start lasting into the seventh inning, a testament to the rotation's current strength. However, his outing was a mixed bag. While he limited the damage to three runs over seven frames, he uncharacteristically labored through command issues, particularly in a costly third inning. Woo struggled to get ahead of hitters, throwing first-pitch strikes to just over half the batters he faced.

The decisive third inning saw Woo's command falter. After falling behind Ramón Laureano 2-0, a misplaced fastball was hammered for a triple. Laureano then scored on a Fernando Tatís Jr. single, tying the game. The trouble continued as Woo engaged in a lengthy battle with Jackson Merrill, who singled and stole second. Although Woo got two outs, a full-count battle with Xander Bogaerts ended with a poorly located sweeper that was driven for a two-RBI single, putting the Padres ahead for good.

Credit to Woo for adjusting and finishing strong, but the three-run deficit proved insurmountable. The Mariners' bats, which showed promise with good at-bats, repeatedly failed to deliver the pivotal hit with runners on, a recurring theme they'll need to solve quickly. The Padres added an insurance run late to seal the series-opening victory, setting the stage for a pivotal rebound game in this cherished interleague rivalry.