Padres and Tigers agree to a trade centered on Casey Mize, swapping pitching prospects by Monday’s deadline

The MLB Trade Deadline is set for Monday at 3 p.m. PT, and the Padres have reached an agreement with the Tigers that would reshape both clubs’ pitching outlook, according to ’s Mark Feinsand. The reported centerpiece is right-hander Casey Mize moving to San Diego, a move framed as an upgrade option for the Padres’ rotation.

On the Detroit side, the proposed return would include two left-handed prospects. reports that left-hander Kash Mayfield, described in the report as the Padres’ No. 2 prospect, and rookie lefty Jackson Wolf would be sent to the Tigers in exchange for Mize. The report also notes that it is not immediately clear whether additional players are involved.

Neither organization has confirmed the trade at the time of the report. That matters for two reasons. First, trade packaging can change between agreement and official announcement, especially around the final hours of a deadline. Second, the official paperwork and timing determine eligibility for postseason rosters and the exact nature of each player’s contractual status going forward, so teams and fans will need to wait for confirmation to know the full picture.

For San Diego, acquiring a former high-end starting prospect in Mize indicates a front-office decision to pursue major-league pitching impact rather than leaving the rotation largely as-is. The Padres have typically been structured to mix veteran experience with younger arms, and this type of deal is designed to bring a controllable piece into the group while the team works toward its playoff runway.

For Detroit, the reported return emphasizes depth and future upside. Mayfield and Wolf are both positioned as left-handed pitching assets, which can be valuable in roster construction because lefties provide matchup flexibility across a season and into October. Adding two young arms also gives the Tigers more pathways for development, including the chance that one or both could become high-leverage rotation or bullpen options depending on how they progress.

The reported structure also underscores how MLB deadline strategy often works. Instead of targeting only veteran rentals, teams sometimes trade from prospect inventory to adjust the balance between present needs and long-term growth. That is especially common when a team believes it can improve its competitive posture in the short term while still maintaining an investment pipeline behind it.

What to watch next is straightforward: confirmation from either club, the final list of players included, and the timing of roster processing once the trade is officially filed. If the deal is confirmed as reported, it would mark a significant shift in San Diego’s starting-pitching plans and a notable infusion of pitching talent into Detroit’s prospect pipeline, both effects that could ripple through the final stretch of the season and, if each club stays on track, into the postseason.