The Nationals claimed Hampton off waivers from the Yankees on Saturday and optioned him to Double-A Harrisburg.
Hampton has spent most of the season at Double-A Somerset, struggling to the tune of a 9.59 ERA and 2.16 WHIP across 35.2 innings. Despite his poor performance, the Nationals will add him to their 40-man roster and send him to their Double-A affiliate. Matt Waldron (chest) was transferred to the 60-day IL in a corresponding move.