The D-Backs have outrighted four players from their 40-man roster: right-handers John Curtiss and Casey Kelly, lefty Kyle Nelson, and infielder Connor Kaiser, all of whom went unclaimed on waivers and are expected to elect free agency. Nelson, who had a strong initial season with Arizona but struggled recently, was the only one with significant tenure on the team, while Curtiss, Kelly, and Kaiser contributed minimally during the past season.
