The 2026 MLB Trade Deadline has come and gone, and the Arizona Diamondbacks were limited to just one deal. But despite a major need in the pitching department — both starter and reliever — the Diamondbacks were unable to bring in a new arm. Why the Diamondbacks didn't add pitching at DeadlineNov 8, 2023; Scottsdale, AZ, USA; Arizona Diamondbacks general manager Mike Hazen speaks to the media during the MLB General Manager's Meetings at Omni Scottsdale Resort & Spa. Mandatory Credit: Mark J. Rebilas-USA TODAY Sports | USA TODAY Sports via Reuters ConnectThe Diamondbacks did not abdicate their responsibilities in looking for pitching upgrades. Hazen admitted that the way this Deadline unfolded was one of the more frustrating such Deadlines, given his hopes to add significant pieces.