ATLANTA (AP) — The Braves have placed center fielder Ender Inciarte on the 10-day injured list, called up top prospect Austin Riley and designated struggling reliever Jesse Biddle for assignment.

The team announced the moves before Wednesday’s game against St. Louis.

Inciarte was hitting just .218 and bothered by a sore back. Ronald Acuña Jr. will move over to play center field, giving Riley a chance to get extensive time in left. He was in the starting lineup, batting sixth and set to make his big league debut.

Riley was hitting .299 and leading the International League with 15 homers and 39 RBIs. Normally a third baseman, he recently started three straight games in left field for Triple-A Gwinnett.

The Mississippi native was selected in the first round of the 2015 MLB draft, 41st overall, out of DeSoto Central High School. He played for the Double-A Mississippi Braves in parts of the 2017 and 2018 seasons.

Biddle was let go after surrendering three runs in one-third of an inning Tuesday night in a 14-3 loss to the Cardinals. The left-hander was out of options and had a 5.40 ERA in 15 appearances.

Right-hander Touki Toussaint was recalled from Gwinnett.