Uwasawa cleared waivers and was outrighted to Triple-A Worcester on Saturday, Pete Abraham of The Boston Globe reports.

The Red Sox designated Uwasawa for assignment Tuesday, Mac Cerullo of the Boston Herald reports.

The Red Sox optioned Uwasawa to Triple-A Worcester on Wednesday.

The Red Sox recalled Uwasawa from Triple-A Worcester on Sunday.

The Red Sox selected Uwasawa's contract and optioned him to their spring training complex, Dennis Lin of The Athletic reports.

The Red Sox acquired Uwasawa from the Rays on Wednesday in exchange for cash considerations, Marc Topkin of the Tampa Bay Times reports.

The Rays Marc Topkin of the Tampa Bay Times Uwasawa to minor-league camp Friday, Marc Topkin reports.

Uwasawa is a candidate to open the year as the Rays' No. 5 starter with Taj Bradley (pectoral) ruled out for the start of the season, Marc Topkin of the Tampa Bay Times reports.