Riley will be one of eight Braves prospects to take part in the Arizona Fall League this year, David O'Brien of The Atlanta Journal-Constitution reports.
The team's 19-year-old phenom, Ronald Acuna, headlines the group, but Riley -- the Braves' No. 12 fantasy prospect -- earned his spot by showing improved plate discipline at High-A before slashing .292/.360/.448 with six homers in 41 games following a promotion to Double-A Mississippi. The 20-year-old third baseman is still growing into his power, but whether it plays in the majors will depend on how much contact he's able to make as he works his way up the ladder.