Blackhawks place goaltender Petr Mrazek on IR with a left groin injury

Mrazek was replaced by Arvid Soderblom in the first period of a 4-2 loss to Winnipeg. The 32-year-old Mrazek is 7-11-1 with a 2.83 goals-against average and .906 save percentage in 20 games this season.