HAZELWOOD, Mo. -- St. Louis Blues forward T.J. Oshie is expected to return from an upper-body injury sometime during the Western Conference first-round series against the Chicago Blackhawks, but Blues coach Ken Hitchcock is still unsure when that will be.

Oshie missed Game 1 on Thursday and as of Friday afternoon is not expected to play in Saturday's Game 2.

"Until someone taps me on the shoulder and says he's a game player, he's out," Hitchcock said on Friday. "Our lineup is going to be fluid every day. Every day it's going to be fluid. I told you guys before we're going to have everybody play in this series at some period of time. That obviously means by Game 5 we expect everybody be ready to go. Hopefully nobody gets injured. Touch wood, but that's our expectation."

Oshie has missed the Blues' past three games due to the injury. He took a hit to the head against the Minnesota Wild on April 10 and has not played since then. He had 21 goals, 39 assists and a plus-19 rating in 79 regular season games.

The Blues were also without forward Patrik Berglund due to an upper-body injury in Game 1. He has missed two consecutive games due to the injury. He had 14 goals, 18 assists and a plus-10 rating in 78 regular-season games.

Hitchcock said he'd likely have a better idea of the injured players' status on Saturday morning.

"We kind of know every morning, the game day, who's in," Hitchcock said. "Today was a good day for the guys that were out, another good day. We'll see how they feel tomorrow."

The Blues defeated the Blackhawks 4-3 in three overtimes in Game 1 of the series on Thursday.