The Washington Nationals have called up shortstop Trea Turner from Triple-A Syracuse and placed first baseman/outfielder Tyler Moore on the 15-day disabled list with a left ankle sprain.

Turner, a highly touted 22-year-old prospect, is batting .322 with eight home runs and 54 RBI in 116 games between Double-A and Triple-A this season. He'll be making his major-league debut.

Turner was acquired from San Diego on June 14 to complete a three-team deal made in December that brought rookie right-hander Joe Ross to the Nationals and sent outfielder Steven Souza Jr. to Tampa Bay.

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Moore goes on the DL retroactive to Wednesday. Right-handed reliever Aaron Barrett (right elbow sprain) was transferred to the 60-day DL to make room for Turner on the 40-man roster.