There seems to be some excitement about the Mets and Rangers swapping veteran players:

The Mets’ first major move after missing the postseason involved trading their longest-tenured player.

They’re sending Brandon Nimmo — who had a full no-trade clause after inking his eight-year, $162 million deal back in 2022 — to the Rangers in exchange for infielder Marcus Semien, The Post’s Jon Heyman confirmed.

The Mets’ longtime outfielder approved the deal, according to Heyman.

NYPost.com

Rangers right fielders hit poorly in 2025, so Nimmo provides an upgrade at that position. He remains a solid two to three WAR player as he goes into his age 33 season. The Mets second basemen hit on par with Semien in 2025. Semien’s age 34 season proved to be an off-year for the late blooming middle infielder, after five of his previous six seasons saw him post fWARs over 4.0, and with three seasons of at least six fWAR. I suspect the Mets believe that he will bounce back at seasonal age 35, and his projections are for 2.9 fWAR.

Note that Semien didn’t just suffer and offensive decline, but a defensive one as well. The injury that shortened his season came at the end, so it did not factor into his poor performance. With an overall decline like that, I tend to think it is age related. If Semien can turn in a three-WAR performance for the Mets, the deal will probably be worth it.