One of the feel-good stories of the '09 season, rookie Jakubauskas, 30, made the club out of spring training, then made 35 appearances, including eight starts. Overall, he went 6-7 with a 5.32 ERA.
Left unprotected, Jakubauskas was claimed by the Pittsburgh Pirates.
"I was surprised when the Mariners called to tell me, but I understood," Jakubauskas said. "Seattle took a chance on me and I'll always be grateful. It looks like I'll get a chance to start in Pittsburgh, and the rest is up to me."
Tacoma right-hander Manuel, obtained last season when the Mariners traded outfielder Wladimir Balentien to Cincinnati, was claimed by the Red Sox. In 15 appearances with the Rainiers, he posted a 3.32 ERA and four saves.