Allen will be between the pipes for Sunday's game against the Blackhawks, NHL.com's Lou Korac reports. Though the Blues were able to escape with a 7-5 win Friday night, Brian Elliott's recent swoon could be warranting some concern with the postseason approaching. Coach Ken Hitchcock has continued to stand by Elliott as his No. 1 netminder, but Allen's workload has begun to increase in recent weeks, and may not die down in the near future. Allen has won three of his last five starts, posting a .936 save percentage during that stretch.