The Reds have claimed righty Abel De Los Santos off waivers from the Nationals, per an announcement from Washington. The Nats needed a 40-man spot to make way for the promotion of Reynaldo Lopez, who’ll take the active roster spot of the DL’ed Sammy Solis.

De Los Santos is a 23-year-old righty who came to the Nats in the 2014 trade that sent Ross Detwiler to the Rangers. He did reach the major league level briefly last year, but has spent most of his time in the last two campaigns in the upper minors.

This year, De Los Santos owns a 3.67 ERA with 10.2 K/9 against 6.0 BB/9 across 34 1/3 frames split between the Double-A and Triple-A levels. His walk rate has been creeping up as he has ascended the ranks, but generally he seems like a useful potential future reliever. Cincinnati will start him off on optional assignment to Double-A.