Nationals sent RHP Jordan Weems outright to Triple-A Rochester.
The 31-year-old hurler was designated for assignment earlier in the week, but he passed through waivers unclaimed and will continue to function as extra bullpen depth for the Nats at the Triple-A level. Weems holds a 6.70 ERA, 1.75 WHIP and a 35/24 K/BB ratio over 41 2/3 innings in 41 appearances at the big-league level this season.