San Francisco Giants take on Seattle Mariners in July 18 matchup

The San Francisco Giants (42-55) head to T‑Mobile Park in Seattle for a game against the Seattle Mariners (48-50) on July 18, 2026. The Giants come off a 7‑0 win over Seattle that featured a grand slam by shortstop Willy Adames and a strong outing by pitcher Landen Roupp. With the Giants trailing in the National League West, they are sellers at the trade deadline, while the Mariners remain within a game of the AL West lead.

For Saturday, the Giants have listed a lineup that includes Adames, outfielder Heliot Ramos, and first baseman Bryce Eldridge. Starting pitchers are Logan Webb (5‑7, 3.86 ERA) for San Francisco and Bryan Woo (7‑6, 4.23 ERA) for Seattle. Notable matchups highlighted are Ramos versus Woo, where Ramos holds a .500 average in six at‑bats, and Adames, who hit a grand slam in the previous game and aims to continue his surge.

The game will be broadcast on Fox and heard on local radio stations KNBR 680/1510 AM for the Giants and Seattle Sports 710 AM for the Mariners.