Rockies third base prospect Nolan Arenado is expected to be promoted to the major leagues Sunday after third baseman Chris Nelson was designated for assignment following Saturday's game against the Diamondbacks, according to multiple sources.
Arenado is one of the top prospects in baseball, ranked as a top 100 prospect by Baseball America (No. 52) and MLB.com (No. 62). Arenado is off to a stellar start at Triple-A Colorado Springs, batting .364 with three home runs, 11 doubles and 21 RBI in 18 games.
Arenado is expected to play regularly for the Rockies.