Miller announced his retirement from baseball Thursday, Derrick Goold of the St. Louis Post-Dispatch reports.

Miller (foot), activated from the injured list earlier in the day, fired a perfect sixth inning in a loss to the Dodgers on Monday, recording a strikeout.

Miller (foot) was activated off the injured list Monday, Zachary Silver of MLB.com reports.

Miller (foot) threw a bullpen session Saturday without issues and could be activated during the coming week, the Associated Press reports.

The Cardinals placed Miller on the 10-day injured list Saturday with a left foot blister, Jeff Jones of the Belleville News-Democrat reports.

Miller has pitched to a 10.50 ERA, 1.67 WHIP and 1.5 HR/9 across the six innings covering his last six appearances.

Miller, who fired a scoreless two-thirds of an inning during which he allowed two hits and recorded a strikeout in a loss to the Reds on Friday, has a 2.45 ERA and two holds across his last six appearances.

Miller secured his fourth hold in a win over the Giants on Tuesday, allowing a hit and hitting a batter over one-third of an inning.

Miller fired a perfect eighth inning in a win over the Diamondbacks on Monday.

Miller (toe), just activated from the injured list Thursday, fired 2.1 scoreless innings during which he allowed three hits, issued an intentional walk and recorded a strikeout in a loss to the Reds on Friday.