SEATTLE -- The Mariners reinstated left-hander Yusei Kikuchi from the injured list Monday, making him eligible to participate in the All-Star Game.

Kikuchi was selected to the American League All-Star team for the first time in his career and is Seattle's lone representative.

The Mariners placed Kikuchi on the injured list Sunday but did not disclose an injury and manager Scott Servais said he could not comment but wasn't concerned about Kikuchi's status.

Seattle used the open roster spot to promote top catching prospect Cal Raleigh, who made his major league debut Sunday against the Los Angeles Angels.

The Mariners optioned infielder Donovan Walton to Triple-A Tacoma and designated for assignment reliever Will Vest in order to reinstate Kikuchi.

Kikuchi has been one of the top left-handers in baseball this season, his third since signing with the Mariners and moving to the major leagues from Japan. He's 6-4 with a 3.48 ERA and 98 strikeouts.