Jeroloman was once called up to the majors but didn't appear in a game in five weeks because of an injury.
We round up last week's minor league results, which includes Trea Turner's torrid start.
Last year, the Nationals were rated the 12th best farm system, but have improved.
Former Nationals farmhand, catcher Jhonatan Solano, is back.
Why dealing from depth for major league talent to fill needs makes sense.
Marmolejos is the minor league player of the year and Voth is the pitcher of the year.
"It depends on our health and where we’re at," said Manager Matt Williams.
"It’s good experience watching a major league game and it helps from an evaluation standpoint, especially at Triple-A. You get to see what it takes to be here."
And Mike Rizzo and Matt Williams explain why only one pitcher was called up on Sept. 1.
In order to make room for Severino, the Nationals transferred reliever David Carpenter to the 60-day disabled list.