Walters came to Washington in a seemingly minor 2011 trade that sent Jason Marquis to Arizona. He was turned into Cabrera.
Matt Williams stopped short of calling it a platoon but is mixing and matching at second base with Ryan Zimmerman out.
With Adam LaRoche coming back Sunday, the Nats made room by sending Walters to Class AAA.
The back-up Nationals infielder is making his first-ever pro ball start in the outfield because of the team's needs.
With injuries, the Nationals have four rookies on the roster -- and they're notching their career firsts.
The Nationals sent Zach Walters to minor league camp.
The Nationals closer hasn't looked sharp this spring but Manager Matt Williams insists that the right-hander feels good.
The 24-year-old infielder is hoping to bulk up to 225 pounds by spring training after playing winter ball.
The 23-year-old switch-hitting infielder hit a career-high 29 home runs this season with Class AAA Syracuse.
Four position players and one pitcher are slated to join the Nationals in Philadelphia.