Fleming signed a minor-league contract with the Cardinals on Wednesday, Derrick Goold of the St. Louis Post-Dispatch reports.
Fleming has spent time with the Blue Jays and Cubs this season. He gave up six runs over three innings during his lone big-league appearance but owns a 3.16 ERA and 1.19 WHIP across 82.2 frames in the minors. He'll report to Triple-A Memphis to begin his tenure with the Cardinals but could get another opportunity to pitch in the majors if he continues to perform well.