Milner was optioned to Triple-A Nashville on Saturday.
Milner tried to stop the bleeding Friday after the first four pitchers to take the ball for Milwaukee combined to give up 13 runs, but Milner just made things worse, surrendering two runs of his own in one-third of an inning. The lefty could return to the Brewers' bullpen later in the season, though he could just as easily be DFA'd.