Fox signed a minor-league contract with the White Sox on Feb. 8.
Fox was released by the Nationals on Tuesday, Bobby Blanco of MASNSports.com reports.
The Nationals reassigned Fox to minor-league camp Tuesday, Andrew Golden of The Washington Post reports.
Fox cleared waivers Tuesday and was outrighted to Triple-A Rochester, Bobby Blanco of MASNSports.com reports.
Fox was designated for assignment by the Nationals on Tuesday, Andrew Golden of The Washington Post reports.
Fox (undisclosed) has gone 2-for-11 with a home run, a walk and two RBI in three games since returning from Triple-A Rochester's 7-day injured list Saturday.
Triple-A Rochester placed Fox on its 7-day injured list Tuesday due to an unspecified issue, Jesse Dougherty of The Washington Post reports.
Fox was optioned back to Triple-A Rochester on Tuesday, Matt Weyrich of NBC Sports Washington reports.
Fox was recalled from Triple-A Rochester on Friday, Bobby Blanco of MASN reports.
Fox was optioned to Triple-A Rochester on Tuesday.