The Washington Nationals placed right-hander MacKenzie Gore on the injured list Saturday after he experienced blister issues in his start Friday night against the Los Angeles Dodgers.
In a corresponding move, the Nationals bolstered their bullpen with the addition of left-hander Joe La Sorsa.
Gore went four innings before he was removed from Friday's game, giving up four runs, including three home runs. The 24-year-old is 7-10 with a 4.42 ERA over 27 starts in his first season with Washington.
La Sorsa, 25, is 1-0 with a 6.98 ERA in 17 appearances with the Nationals this season. He was selected off waivers from the Tampa Bay Rays in June.
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