The Washington Nationals promoted 19-year-old Juan Soto from the minors on Sunday.
Soto, an outfielder, had his contract selected from Double-A Harrisburg before Sunday's game against the Los Angeles Dodgers. The team designated outfielder Moises Sierra for assignment to make room for Soto.
Soto will be the youngest person on a major league roster and doesn't turn 20 until Oct. 25.
Soto hasn't spent much time in the minor leagues, starting at Class A Hagerstown and ending up at Double A Harrisburg in a matter of weeks.
He was hitting .362 with 14 home runs and 52 RBIs during his stint in the minor leagues this season.