Dbacks notes

Gallen threw 15 pitches (nine for strikes), including a changeup that Gabriel Arias sent back over the fence in left-center field. The right-hander told Steve Gilbert of MLB.com that he felt better than his most recent live batting practice session, but the changeup that Arias hammered was “kind of flat.” Gallen and Corbin Burnes are considered co-aces — each has thrown one Cactus League inning — and manager Torey Lovullo is still deciding which one will start Opening Day.

Vieira told trainers Monday that he feels discomfort in his right knee, right elbow and right shoulder, MLB.com reports.

The Diamondbacks are planning to have Vieira undergo imaging to determine what the source of the discomfort may be. Vieira played for three teams in 2024, finishing out the season with Arizona.

McCarthy started in right field and went 1-for-3 with a double and a run scored in Sunday’s spring game against the Mariners.

McCarthy and Alek Thomas are involved in a competition for a starting job in the outfield. Both saw action Sunday, with Thomas patrolling center field. McCarthy enters spring training ahead of Thomas on the depth chart after a strong season at the plate in 2024, when Thomas was dogged by injury and limited to 60 games between the majors and minors.

Henry allowed four runs on five hits while striking out one over 1.1 innings in Sunday’s spring game against Seattle.

Henry had a benign first inning but ran into trouble in the second frame and was removed after 40 pitches. Arizona has several starters in camp ahead of the Henry, who should serve the organization as a depth starter at Triple-A Reno. He might also be used as a long reliever if promoted to the majors.

Montgomery (finger) is scheduled to throw a bullpen session Tuesday, Steve Gilbert of MLB.com reports.

Montgomery, who was cleared for a bullpen session after an exam last Wednesday, had been scheduled to throw Saturday but will now throw Tuesday. The left-hander built up prior to spring training and doesn’t expect there to be any issue with being ready for the start of the season.