Sporting goalie Kronberg to miss 4-6 weeks

Sporting Kansas City goalie Eric Kronberg is expected to be sidelined four to six weeks with a lower back injury, the Major League Soccer club said Thursday.

The 28-year-old Kronberg has been with Kansas City since 2006, and will enter his seventh season with the club in 2012. He had made four appearances in MLS and has one shutout.

Kansas City opens the new season at D.C. United on March 10 at 6 p.m. (ET).