Quero was placed on the 7-day injured list at Double-A Biloxi on Sunday with groin tightness, Adam McCalvy of MLB.com reports.
The 20-year-old catcher isn't believed to be dealing with a serious injury, but he'll still be sidelined for the remainder of Biloxi's season. Quero is one of Milwaukee's top prospects and posted a .262/.340/.443 slash line with 16 home runs in 90 games for Biloxi this season.