Voth was optioned to Triple-A Syracuse on Monday, Chelsea Janes of The Washington Post reports.
Voth was excellent over his three appearances in Grapefruit League play, tossing 4.2 scoreless innings and striking out five while walking none, but with Max Scherzer (finger) trending towards being ready for Opening Day, the 24-year-old didn't have much chance of breaking camp with a rotation spot. Even so, Voth will likely reside near the top of the list if the Nationals have a need for another starter at some point this season, as he has little left to prove at the Triple-A level. He compiled a 3.15 ERA and 7.6 K/9 over 157 innings with Syracuse in 2016.