Machado gave up a hit and a walk while striking out one in a scoreless inning of relief during Monday's Grapefruit League game against the Cardinals.
The 28-year-old right-hander has looked good in camp, as he hasn't given up a run in three Grapefruit League appearances with a 5:1 K:BB. Machado picked up 10 holds over 40 appearances out of the Nationals' bullpen last year, and he figures to fill a similar middle-relief role in 2022.