The Rockies have designated Alfredo Amezega for assignment and recalled Chris Nelson from Triple-A, according to the team's Twitter feed. Tracy Ringolsby of FOX Sports first tweeted that Nelson would replace Amezaga on Colorado's roster.
Ken Rosenthal of FOX Sports reported on Thursday that the Rockies were looking to shake up their bench, with Amezaga and Jose Lopez in jeopardy of losing their roster spots. Lopez was DFA'd later that night.
Amezaga, 33, has hit .242/.297/.273 in 38 plate appearances for the Rockies in 2011. The utility player, who signed a minor league deal with Colorado in January, played in 20 games for the team, seeing time at second base, shortstop, third base, and right field.