Tiefensee (upper body) will miss Monday's preseason contest against the Blues, per Owen Newkirk of DLLS Sports.
Blackwell is dealing with a lower-body injury but should return before Opening Night, Robert Tiffin of NHL.com reports Monday.
DeSmith will draw the start during Monday's preseason game at home against the Blues, Sam Nestler of DLLS Sports reports.
Steel signed a four-year, $14.8 million contract extension with the Stars on Monday.
Gustafsson-Nyberg (undisclosed) will be in the lineup for Monday's preseason game in Chicago.
Gustavsson (hip) is expected to return around early November, Joe Smith of The Athletic reports Friday.
Pickard is set to start at home against Chicago for Saturday's preseason game, per Michael Russo of The Athletic.
Gleason signed a professional tryout agreement with the Stars on Wednesday.
Schmidt continues to deal with the flu and may not be ready for the start of camp, Sam Nestler of DLLS Sports reports.
Bertucci isn't ready for the start of training camp because of an undisclosed injury, per Sam Nestler of DLLS Sports on Wednesday.
