Fresh off a victory last night in Seattle, the first place A’s take on the Seattle Mariners tonight at T-Mobile Park. The A’s have not sat atop the American League West Division since June 19, 2021. It’s early and hardly an opportunity for a parade since they are just one game over .500, but it is worth noting.Tonight, Jacob Lopez takes the mound for the A’s.
The 28-year-old lefty is 1-1 in four starts this season with a 6.38 ERA. He’ll go up against Luis Castillo for the Mariners. Castillo is 0-1 after four starts, with a 5.40 ERA in eighteen innings.Castillo will go up against this lineup for the visiting Athletics:Let's run it back 🔄 pic.twitter.com/S94KP8vzff— Athletics (@Athletics) April 21, 2026Lopez will face this lineup for the Mariners:Game 2️⃣ is on deck 👊 pic.twitter.com/lXFdHPDjsL— Seattle Mariners (@Mariners) April 21, 2026Follow the Game:Watch:Athletics – NBCSCAListen:Athletics – Talk 650 KSTE, A’s Cast