Seattle Mariners to call up prized pitching prospect George Kirby, sources say

The Seattle Mariners are calling right-hander George Kirby one of baseball’s top pitching prospects, sources told ESPN’s Jeff Passan on Saturday.

Kirby, who was scratched from his departure for Double-A Arkansas on Saturday, will make his major league debut for the Mariners against the Tampa Bay Rays on Sunday, sources tell ESPN.

On Thursday, the Mariners had signed up for young right-handed starter Matt Brash in Triple-A Tacoma, with plans to transition him to a bullpen role for the rest of the season.

Kirby, a 24-year-old who was the 20th overall pick in the 2018 MLB Draft over Elon, has a huge ceiling with great command and above-average tricks, including his fastball, which reached in average 97.3 mph during the 2021 season.

Some Mariners brass even called him “robopitcher” due to his excellent control.

Kirby has dominated in his five Double-A Texas League starts this season, going 2-0 with a 1.82 ERA and 24 strikeouts in 24 2/3 innings for Arkansas. He could definitely give the Mariners a boost, who have a 3.68 ERA and are playing 16 games in 16 days.

He was ranked the 34th prospect to watch by ESPN at the start of the 2022 season.

Brash, who turns 24 next week, was 1-3 with a 7.65 ERA in five starts.

In other moves Saturday, the Mariners placed receiver Tom Murphy on the disabled list with a dislocated left shoulder and recalled receiver Cal Raleigh from Triple-A Tacoma.

Murphy was injured in the fifth inning of Friday’s game and is batting .303 with one homer and nine runs scored in 14 games this season.

ESPN’s Kiley McDaniel contributed to this report.

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