The St. Louis Cardinals made significant roster adjustments following a disappointing homestand, where they went 3-6, including a sweep by the Toronto Blue Jays. Among the notable changes is the promotion of 25-year-old reliever Andre Granillo from Triple-A Memphis, who boasts a stellar 1.82 ERA and 46 strikeouts across 29 2/3 innings this season. He is expected to make his MLB debut in a crucial four-game series against the Milwaukee Brewers.

Alongside Granillo's ascent, outfielder Michael Siani is returning after a solid stint in the minors, where he recorded an OPS of .799 and hit five home runs. In contrast, Ryan Vilade has been designated for assignment after struggling at the plate. Additionally, Jordan Walker is starting a rehab assignment after recovering from wrist inflammation. This shake-up comes at a pivotal moment in the season, as the Cardinals look to improve their standing in the tightly contested NL Central.