Indians released RHP Masa Kobayashi.
Indians outrighted RHP Masa Kobayashi to Triple-A Columbus.
According to MLB.com's Anthony Castrovince, the Indians will remove Masa Kobayashi from their 40-man roster on Sunday.
Masa Kobayashi gave up five runs in his inning of relief against the Mariners on Wednesday.
Asked Monday about Masa Kobayashi's status, general manager Mark Shapiro said: "When the games start counting, he's going to have to pitch better than he has out here."
Manager Eric Wedge said the Indians will limit Masa Kobayashi's workload down the stretch.
After being held out of another save opportunity, Masa Kobayashi replaced Edward Mujica in a tie game on Wednesday and gave up a three-run homer to take a loss.
Masahide Kobayashi put himself in line for a loss on Wednesday after giving up a run to the Tigers, but Kelly Shoppach let him off the hook.
Manager Eric Wedge said Tuesday that the Indians will "play it by ear" in the ninth inning rather than designating an official closer.
Masa Kobayashi was pulled after giving up two runs in the ninth Friday against the Twins, enabling Rafael Perez to pick up his first save.
Masa Kobayashi was given a chance to close out Saturday's game, but gave up Adam Dunn's walkoff three-run homer to take the loss.
Masahide Kobayashi earned his first major-league save on Tuesday night in a win over the A's.
Masahide Kobayashi's two-year deal with the Indians is worth $6.25 million and contains a $3.25 million option for 2010.
Indians signed RHP Masahide Kobayashi to a two-year contract with a club option for 2010.