Mariners designated catcher John Buck for assignment. Buck was hitting .226/.293/.286 with one homer in 84 at-bats this season, but that isn't exactly far off what the Mariners should have expected from him. It's also no worse than what they can count on from his likely internal replacement, Jesus Sucre. Sucre was hitting .281/.299/.368 with two homers in 171 at-bats in Triple-A. Perhaps the Mariners are planning a George Kottaras pickup after he was DFA'd by the Indians. Otherwise, this seems pretty pointless for them.