Bengals safety Ricardo Allen will be out for at least three weeks with a hamstring strain and a broken hand (Twitter link via Adam Schefter of ESPN.com). As a result, they’ll place Allen on short-term IR and sign veteran safety Sean Davis to the practice squad as insurance. 
Allen joined the Bengals in March to fortify the safety group. Before that, he operated as a first-string safety for the Falcons from 2015-2020, including a start in Super Bowl LI. Despite losing his 2018 season to injury, the 29-year-old was mostly healthy over the last two years, up until now.
In his 12 games last season, the 29-year-old registered 25 stops and a pair of interceptions. Counting the ill-fated season opener against the Vikings, he’s appeared in 78 games (76 starts) since 2014. And, in those 21 snaps on Sunday, Pro Football Focus assigned him a solid overall grade of 85.4.
The Bengals could promote Davis, Brandon Wilson, or Trayvon Henderson as they await Allen’s return from IR. They’ll likely make the call today as they gear up for the Bears in Week 2.