Tuivailala (shoulder) cleared release waivers and became a free agent Monday, Ryan Divish of The Seattle Times reports.

Tuivailala (shoulder) was placed on unconditional release waivers by the Mariners on Friday.

Tuivailala (shoulder) was slated to throw a simulated game Friday before MLB's announcement Thursday that the remainder of spring training would be cancelled due to the COVID-19 pandemic, Greg Johns of MLB.com reports.

Tuivailala (shoulder) faced live hitters for the first time this spring as part of a "B" game on a back field at the Mariners' complex Friday, Daniel Kramer of MLB.com reports.

Tuivailala is dealing with a minor shoulder impingement and is at least a week away from game action, Greg Johns of MLB.com reports.

Tuivailala agreed to a one-year, $800,000 deal with the Mariners, avoiding arbitration, freelance baseball writer Robert Murray reports.

Tuivailala served as the opener against the Rays on Sunday and fired a perfect first inning during which he recorded a strikeout.

Tuivailala will serve as the opener Sunday against the Rays, Greg Johns of MLB.com reports.

Tuivailala will serve as the Mariners' opening pitcher in Sunday's game against the Astros, Greg Johns of MLB.com reports.

Tuivailala (1-0) secured the win over the Rangers on Tuesday, allowing two hits and recording two strikeouts over 1.1 scoreless innings.