Arizona Diamondbacks

Ryne Nelson

SP

Nelson threw 11 pitches (eight strikes) in his second rehab appearance and has struck out four over two scoreless and hitless innings. The one-time starter will operate as a reliever once he's activated from the injured list.

Ryan Thompson

RP

Thompson initially landed on the injured list Aug. 5 with a lower-back strain, so his move to the 60-day IL will officially rule him out for the rest of the season. Blake Walston (elbow) will return from the 60-day IL in a corresponding move to claim the open spot on Arizona's 40-man roster.

A.J. Puk

RP

Puk suffered a shoulder capsule sprain while pitching in a rehab game in June, and MRI results revealed in July that he still hasn't fully recovered from the injury. After seeking out a second opinion, the left-hander is now officially set to miss the entire 2026 campaign. Puk is set to become a free agent this coming offseason and will shift his focus toward getting healthy for the start of 2027.

Andrew Saalfrank

RP

The throwing program began with Saalfrank tossing out to 60 feet. The left-hander underwent shoulder surgery ahead of spring training and is considered out for the season.

Cristian Mena

RP

Mena sustained a teres major strain in his right shoulder in June of 2025, which caused him to miss the rest of that season. He opened 2026 on the 60-day IL and was cleared to resume his throwing program in mid-May. However, it appears Mena suffered another setback in his recovery, and his shoulder injury is severe enough for him to undergo a season-ending procedure. The hope for the Diamondbacks is that the surgery will have the 23-year-old fully healthy for the start of spring training in February.