Tyler Walker, a 32-year-old right-handed reliever who appeared in 65 games last season with San Francisco, has signed a one-year contract with the Seattle Mariners.
"Tyler is a pitcher we had identified early on as a guy who could help us in the bullpen," general manager Jack Zduriencik said. "He has the ability to pitch in any role: middle relief, set-up and he has experience as a closer."
Walker has a 20-17 career record in relief with a 4.52 earned run average.
After undergoing 'Tommy John' elbow surgery in 2006, he missed most of the next season - then worked 53 innings last year with the Giants.
Walker had a career-high 19 holds in 2008, and struck out 49 batters while walking only 21.
He's also registered 34 career saves, which immediately makes him a ninth-inning option.
"Closing? That's not up to me. That's the ideal spot to be, the only guy who's ever happy in the bullpen. He's pitching when you're winning. We'll see how it pans out," Walker said. "I've pitched every inning of a game, including the 14th."