The rookie left-hander and three other Nationals relievers combined for an impressive showing that kept Washington in Tuesday night's game until the end.
Known for a powerful sinking fastball, Treinen is honing his slider, which complemented the sinker well this weekend.
The powerful right-hander got his first setup chance Wednesday, and threw a scoreless eighth.
The first starting lineup of the spring training season is here for your perusal.
For the second straight spring, big right-hander Blake Treinen's power sinker and do-it-all attitude are making a big impression.
The Nationals have loaded up their rotation and solidified their infield. What comes now?
With their bullpen faltering for the first time this year, the Nationals will add Blake Treinen and option Aaron Barrett.
The Nationals have called on Treinen several times this season to help the rotation, and the right-hander finally earned his first major league win.
In other news, Wilson Ramos is expected to be activated from the disabled list on Thursday in Chicago.
The left-handed reliever will be with the Nationals for, at least, the weekend as an extra arm in the bullpen.