Barrera, Pérez clear outright waivers

Tres Barrera and Francisco Pérez have cleared outright waivers and the Nationals have assigned their contracts outright to Triple-A Rochester.

Additionally, all 60-day Injured List players have been reinstated to the 40-man roster, which now stands at 39.

Barrera, Pérez casualties of Nats' 40-man roster m...
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