Amador joined the Rockies in St. Louis on Saturday, though the team has yet to formally call him up from Double-A Hartford, Thomas Harding of MLB.com reports.
Amador sports a .666 OPS through 208 plate appearances this season with Hartford, but he has slashed .326/.388/.767 with six homers and 14 RBI while also stealing six bases across his last 10 games. With the Rockies waiting to see if Brendan Rodgers (hamstring) will require a trip to the injured list, Amador will remain on the club's taxi squad for the time being. He would likely return to Double-A if Rodgers is able to make a quick recovery.