Forsythe, 30, hit .224/.351/.327 with six home runs and 36 RBI in 439 plate appearances during the regular season for the Dodgers. He did play solid defense at both second base and third base. In the playoffs, he was much more successful at the plate, batting .297/.435/.351 in 46 plate appearances.
Dayton, 29, underwent Tommy John surgery back in August and is almost certainly out for the entire 2018 season. The Braves, obviously, are making a longer-term play here by acquiring him, as he is under team control through 2022.
Over parts of two seasons in the majors, Dayton has a 3.42 career ERA with 59 strikeouts and 18 walks in 50 innings.