Kelley, who started the season on the Mariners' Opening Day roster in Japan before being optioned to Tacoma upon the Mariners' return to the United States, will be available for Saturday night's game at Safeco Field. The 28-year-old made one appearance with the big league club, taking the loss in a March 29 appearance after allowing one run on a solo homer, while recording just one out.
With Tacoma, Kelley has turned in five straight scoreless appearances, and has allowed just two earned runs overall in 14 2/3 innings of work. He's 1-0 with a 1.23 ERA with the Rainiers, striking out 19 and walking just four.
Kelley tossed 12 2/3 scoreless innings in his 10 appearances with Seattle in 2011. For his career, he's 8-6 with a 3.75 ERA over 84 innings.
The 22-year-old Ramirez didn't record a decision while posting a 2.45 ERA in his seven appearances with the Mariners this season.