The Mariners optioned Klein to Triple-A Tacoma on Thursday.

EDGE Analysis

Klein was with the big club for only one day and did not make an appearance. He is making room on the roster for Emerson Hancock, who has been recalled to start Thursday in Cincinnati.

The Mariners recalled Klein from Triple-A Tacoma on Wednesday, Daniel Kramer of MLB.com reports.

EDGE Analysis

He's taking the roster spot vacated by Gregory Santos, who was sent down to Tacoma. Klein has struggled this season with Tacoma, yielding nine runs with a 13:7 K:BB over 6.1 relief innings.

The Mariners optioned Klein to Triple-A Tacoma on Friday.

EDGE Analysis

Acquired from the Athletics in January, Klein has allowed four runs (two earned) with an 8:3 K:BB over five innings during Cactus League play. He'll represent relief depth at Tacoma and should get an opportunity with the big club eventually.

The Athletics traded Klein to the Mariners on Tuesday in exchange for international slot money.

EDGE Analysis

After the trade, Klein was added to Seattle's 40-man roster. The right-hander was designated for assignment Friday, but he had the tools to drive interest of other clubs. The Mariners will be the hard thrower's third ball club after beginning his career with the Royals.

The Athletics designated Klein for assignment Friday.

EDGE Analysis

The transaction clears a spot on the 40-man roster for Jose Leclerc, who was signed Friday. Klein, who was acquired from the Royals at the trade deadline as part of the return for Lucas Erceg, allowed nine runs with a 7:6 K:BB over 7.1 innings in his first go-round in the majors in 2024. However, the big righty throws hard and has 30.4 percent strikeout rate at the minor-league level, so he figures to draw some interest via trade or waivers.

Triple-A Las Vegas placed Klein on its 7-day injured list Aug. 31 with an unspecified injury.

EDGE Analysis

Acquired from the Royals at the trade deadline, Klein initially reported to Oakland and made three appearances for the big club before being optioned to the minors Aug. 17. He gave up three earned runs on six hits and five walks over 5.1 innings across four outings prior to landing on Las Vegas' IL.

Klein was optioned to Triple-A Las Vegas on Saturday.

EDGE Analysis

Klein gave up five earned runs on two hits and four walks while recording one strikeout in 1.2 innings across three appearances since the Athletics acquired him from the Royals at the deadline as part of the return for Lucas Erceg. The 24-year-old righty walks too many batters (16.3 BB% at Triple-A, 15.8 BB% in the majors) to work in high-leverage situations anytime soon.

The Athletics acquired Klein, Jared Dickey and Mason Barnett from the Royals on Tuesday in exchange for Lucas Erceg, Mark Feinsand of MLB.com reports.

EDGE Analysis

Klein has allowed four runs in 5.2 frames during his brief time in the majors this season. He's put up a 30.7 percent strikeout rate but also a 16.1 percent walk rate in the minors. Klein had been on the Royals' major-league roster, but it's not clear whether he'll report to Oakland or Triple-A Las Vegas.

The Royals recalled Klein from Triple-A Omaha on Monday.

EDGE Analysis

Klein has permitted four runs over 5.2 relief innings during his time with the big club this season. The right-hander will operate in low-leverage spots out of the bullpen.

The Royals optioned Klein to Triple-A Omaha on Monday.

EDGE Analysis

Kansas City will swap Klein out of its bullpen for right-hander Dan Altavilla, whose contract was selected from Omaha ahead of Monday's game against the Yankees. Klein was unlikely to be available out of the bullpen for at least a couple of days anyway after he had given up two runs on six hits and two walks over 2.2 innings between relief appearances Friday and Sunday versus the Mariners.