Diamondbacks at Mariners updates. Perdomo goes deep but offense quiet

SEATTLE — Right-hander Zac Gallen has served up a pair of home runs, a solo shot in the first and a two-run homer in the third, and the Diamondbacks trail the Seattle Mariners, 3-1, in the fifth inning on Friday night, May 29, at T-Mobile Park.

Geraldo Perdomo’s solo homer is all the Diamondbacks have mustered offensively against Mariners right-hander George Kirby.

Gallen’s fifth pitch of the night, a high fastball to Mariners leadoff hitter J.P. Crawford, was hit out to right field to put the Diamondbacks in an early 1-0 hole.

Two innings later, Gallen had two outs in the third inning and had retired seven batters in a row before issuing a walk to Crawford. Julio Rodriguez followed by driving a 1-1 slider out to left field. It was a low liner that left Rodriguez’s bat at 113.6 mph.

Aside from the Perdomo homer, Kirby has allowed two other hits and walked a batter, striking out four.

Arenado planning to return to lineup soon

Nolan Arenado was out of the lineup for the second consecutive game on Friday, May 29, but the Diamondbacks’ veteran third baseman said he was feeling much better and expected to start on Saturday in the second game of their series against the Seattle Mariners at T-Mobile Park.

Arenado exited the Diamondbacks’ 7-5 win over the San Francisco Giants on Tuesday night due to right groin tightness.

Manager Torey Lovullo said Arenado received treatment on his groin on Thursday’s off day and was expected to go through a full pregame workout on Friday evening.

“He’ll most likely be available off the bench today and in the lineup tomorrow,” Lovullo said. “That’s what we’re anticipating.”

Right-hander Corbin Burnes threw 20 pitches in a live batting practice session on Friday, his first time facing hitters since undergoing elbow surgery last year, Lovullo said.

Burnes is expected to face hitters again on Tuesday as he continues to point toward a July return from the injured list.

One of the hitters Burnes faced was outfielder Jordan Lawlar, who is working his way back from a wrist fracture. Lawlar was expected to progress to a game in the Arizona Complex League on Saturday.

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Infielder Nolan Arenado anchors Arizona Diamondbacks. See the photos

Arizona Diamondbacks third baseman Nolan Arenado (28) celebrates with right fielder Corbin Carroll (7) and shortstop Geraldo Perdomo (2) after hitting a grand slam home run in the first inning against the San Francisco Giants at Chase Field on May 18, 2026.

(Matt Kartozian/Imagn Images)

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Infielder Nolan Arenado anchors Arizona Diamondbacks. See the photos

(Matt Kartozian/Imagn Images)

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Infielder Nolan Arenado anchors Arizona Diamondbacks. See the photos

Arizona Diamondbacks third baseman Nolan Arenado (28) hits a grand slam home run in the first inning against the San Francisco Giants at Chase Field on May 18, 2026.

(Matt Kartozian/Imagn Images)

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Scenes from Arizona Diamondbacks’ 3-game set vs San Francisco Giants

Arizona Diamondbacks shortstop Geraldo Perdomo (2) singles in the first inning against the San Francisco Giants at Chase Field on May 18, 2026.

(Matt Kartozian/Imagn Images)

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Scenes from Arizona Diamondbacks’ 3-game set vs San Francisco Giants

Arizona Diamondbacks second baseman Ketel Marte (4) singles in the first inning against the San Francisco Giants at Chase Field on May 18, 2026.

(Matt Kartozian/Imagn Images)

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Scenes from Arizona Diamondbacks’ 3-game set vs San Francisco Giants

San Francisco Giants pitcher Robbie Ray (38) throws in the first inning against the Arizona Diamondbacks at Chase Field on May 18, 2026.

(Matt Kartozian/Imagn Images)

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Scenes from Arizona Diamondbacks’ 3-game set vs San Francisco Giants

Arizona Diamondbacks pitcher Zac Gallen (23) throws in the first inning against the San Francisco Giants at Chase Field on May 18, 2026.

(Matt Kartozian/Imagn Images)

First baseman Pavin Smith shifted his rehab assignment to Triple-A Reno this week, getting four at-bats as the designated hitter on Wednesday night. He did not play on Thursday as planned, Lovullo said, because he was dealing with an illness. Depending on how he feels, Smith might serve as the DH again on Friday night for Reno.

Left-hander A.J. Puk, who is also working his way back from elbow surgery, made his second appearance in the complex league on Wednesday, throwing a scoreless inning, and was expected to pitch again on Saturday.

Coming up

Saturday, May 30: At Seattle, 7:10 p.m., Diamondbacks RHP Ryne Nelson (2-3, 4.65) vs. Mariners RHP Bryan Woo (4-3, 3.82).

Sunday, May 31: At Seattle, 1:10 p.m., Diamondbacks RHP Merrill Kelly (5-3, 5.25) vs. Mariners RHP Bryce Miller (1-0, 2.25).

Monday, June 1: At Chase Field, 6:40 p.m., Diamondbacks LHP Eduardo Rodriguez (5-1, 2.31) vs. Dodgers RHP Emmet Sheehan (3-1, 4.70).

What to know about the Seattle Mariners

The Mariners completed a three-game sweep of the Athletics on Wednesday, May 27, to move to their record to 28-29, good enough, believe it or not, for first place in the American League West. Not all has gone according to plan for the Mariners this year. C Cal Raleigh, who smacked 60 homers last year, has only seven this year. On the injured list with an oblique injury, he was hitting just .161/.243/.317 through 41 games. The Mariners are also without 3B Brendan Donovan, their big offseason acquisition. He was off to a fast start (.274/.386/.452) through 25 games, but has twice landed on the injured list due to a groin strain. RHP Logan Gilbert has been dominant of late, not allowing a run in three of his past four starts, though he will not pitch in the Diamondbacks series. The series finale likely will be started by either RHP Bryce Miller or RHP Luis Castillo, who have been alternating in the fifth spot in the rotation.

(This story has been updated to add information.)

This article originally appeared on Arizona Republic: Diamondbacks-Mariners updates. Perdomo goes deep but offense quiet

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