Thornton (4-3) got the win against the Cardinals on Sunday, firing two scoreless innings during which he allowed a hit and recorded two strikeouts.

Thornton (3-3) took the loss against the Athletics on Tuesday, allowing an earned run on two hits and a walk over one-third of an inning. He struck out one.

Thornton recorded his first save in a win over the Rays on Wednesday, firing a perfect ninth inning.

Thornton (3-1) got the extra-inning win over the White Sox on Wednesday, firing a scoreless ninth inning during which he recorded a strikeout.

Thornton (2-1) got the win against the White Sox on Tuesday, firing 1.2 scoreless innings while recording two strikeouts.

Thornton (0-1) took the loss against the Diamondbacks on Sunday, allowing an earned run on a hit and a walk over one inning.

Thornton has pitched 4.2 innings across five Cactus League appearances, allowing four runs (two earned) on three hits and four walks while recording two strikeouts.

Thornton signed a one-year, $1.2 million contract with the Mariners on Thursday to avoid arbitration, Daniel Kramer of MLB.com reports.

Thornton (0-2) took the extra-innings loss against the Angels on Monday, allowing three unearned runs on two hits over one-third of an inning. He struck out one.

Thornton will serve as the Mariners' opening pitcher Saturday against the Rays, Daniel Kramer of MLB.com reports.