Alvarez is expected to be promoted from Triple-A Gwinnett on Monday, Mark Bowman of MLB.com reports.
Though Alvarez is being brought up from the minors to help replace the injured Ozzie Albies (wrist), he'll face competition for reps at the keystone from Zack Short and Whit Merrifield, the latter of whom agreed to a one-year, major-league deal with Atlanta on Monday. Alvarez, lacks prior MLB experience but has impressed between stops at Gwinnett and Double-A Mississippi this season, slashing .293/.401/.417 with seven home runs and 21 stolen bases over 334 plate appearances. The 21-year-old has played only shortstop and third base during his minor-league career, but per David O'Brien of The Athletic, Atlanta is confident he can make the defensive switch without issue.