Atlanta acquired Daniel from the Angels on Friday in exchange for Mitch Farris.
The Angels designated Daniel for assignment Wednesday.
The Angels optioned Daniel to Triple-A Salt Lake on Tuesday.
Daniel will make his next start Sunday in Washington against the Nationals, Jeff Fletcher of The Orange County Register reports.
Daniel and the Angels will not play Tuesday after their game against the Yankees was postponed due to inclement weather.
Daniel did not factor into the decision in a loss to the Rockies on Wednesday, allowing one run on five hits and one walk over five innings while striking out five.
The Angels recalled Daniel from Triple-A Salt Lake on Friday.
The Angels optioned Daniel to Triple-A Salt Lake on Wednesday, Jeff Fletcher of The Orange County Register reports.
Daniel (1-1) took the loss against the Athletics on Wednesday, allowing four runs on seven hits and one walk over 5.1 innings. He struck out three.
Daniel is scheduled to start Wednesday's game against the Athletics in Oakland, Doug Padilla of The Orange County Register reports.