The right-hander has a career 4.00 ERA over seven major league seasons.
The veteran catcher was with the Nationals in spring training last year.
The Nationals add two new managers to their minor league system and promote several coaches from within.
The Nationals will use Syracuse as their Class AAA affiliate for, at least, another five years.
The Nationals will announce a four-year renewal of their contract with Class AAA Syracuse
The Nationals flip the recently DFA'd reliever for a minor league outfielder.
"I felt like it's something interesting," Beasley said. "I think I can do well in this position."
The right-handed reliever split time between the Padres and Angels minor leagues last season.
The big right-handed starter spent the majority of the season injured but the Nationals are bringing him back as insurance.
The 19-year-old right-handed starter leads a group of Nationals prospects heavy on pitching.