6:38 PM ET
While normally a third baseman, Riley recently started three straight games in left field for the minor league team. That’s where he was set to play in his big league debut, batting sixth for Atlanta’s game against the St. Louis Cardinals.
Riley was hitting .299 and leading the International League with 15 homers and 39 RBIs. A roster spot opened when center fielder Ender Inciarte was placed on the 10-day injured list with a sore back.
“I had no clue,” Riley said before the game. “I was kind of waiting my turn. I hate Ender went down last night, but I’m happy to be here and hopefully I can help out.”
Ronald Acuna Jr. will move over to play center field, giving Riley a chance to get extensive time in left. He also can play third base when Donaldson needs a day off.