Here's the other big one from overnight: Luis Castillo from the Mariners to the White Sox for three players.
Castillo is older 33 and has $24M guaranteed for 2027 and a vesting option for 2028 with 180 innings and good health. This season, much like Peralta's, has been his worst year, with an ERA over 5.
The return was Nolan Jones, who's 27 and hasn't lived up to the promise of his 2024 rookie season in Colorado but is probably a fourth outfielder type, Boston Smith, a catching prospect with a .450 OBP in his first pro season, and 31yo Seranthony Dominguez, who offsets some of the salary and is a serviceable bullpen piece.
This feels like the kind of package Peralta will bring.