Atlanta acquired Allen from the Athletics on Monday in exchange for Jared Johnson.
Allen went 2-for-4 with two doubles in a loss to the White Sox on Sunday.
Allen went 1-for-4 with a run in a loss to the Reds on Thursday.
The Athletics recalled Allen from Triple-A Las Vegas on Wednesday.
Allen owns a .420 average and 1.055 OPS over the 80 plate appearances he's logged across 17 games with Triple-A Las Vegas since being optioned May 3.
The Athletics optioned Allen to Triple-A Las Vegas on Friday.
Allen is out of the lineup for Sunday's game against the Orioles.
Allen is not in the lineup for Friday's game against the Orioles.
Allen went 1-for-3 with a solo home run in a win over the Yankees on Thursday.
Allen will start at shortstop and bat eighth in Monday's game against the Yankees, Martin Gallegos of MLB.com reports.