Lourdes Gurriel Jr., Blake Walston reinstated by D-backs with 28-man roster expansion

The Arizona Diamondbacks expanded their roster to 28 players Tuesday by reinstating outfielder Lourdes Gurriel Jr. and lefty pitcher Blake Walston.

Arizona also moved reliever Ryan Thompson from the 10-day injured list to the 60-day IL, ending his season due to a lower back strain.

MLB rosters expanded to 28 players from 26 on Tuesday, so the Diamondbacks did not need to make corresponding moves.

Gurriel had been on the 10-day IL since July 17 with an adductor strain.

He appeared in eight Triple-A games in August to rehab. Over 28 at-bats, he hit .107 with three singles and nine strikeouts to three walks.

In 47 games with the D-backs this season, he is slashing .207/.254/.287.

Walston, Arizona’s first-round pick in 2019, underwent Tommy John surgery after injuring himself last spring and has not pitched in the majors since 2024.

The 25-year-old played in seven games with two starts in 2024. He had a 4.42 ERA and 1.42 WHIP.

He made six rehab appearances in Triple-A leading up to his MLB return and posted a 4.70 ERA.

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