Karlsson signed a two-year, $13.5 million contract extension with the Golden Knights on Wednesday, per Jesse Granger of The Athletic.
Duchene (lower body) was placed on injured reserve Wednesday, Sam Nestler of DLLS Sports reports.
Duchene (lower body) is doubtful to play Friday versus St. Louis, per Lia Assimakopoulos of The Dallas Morning News.
Oettinger (lower body) is available for Friday's season opener at home against St. Louis, per Owen Newkirk of DLLS Sports.
DeSmith agreed to terms on a two-year, $5 million contract extension with Dallas on Wednesday.
Connelly scored a goal on four shots in Tuesday's 5-2 win over the Blackhawks.
Olofsson scored a power-play goal on two shots in Tuesday's 5-2 win over the Blackhawks.
Stone scored an empty-net goal, added two hits and went plus-2 in Tuesday's 5-2 win over the Blackhawks.
Eichel scored a goal on two shots and added two assists in Tuesday's 5-2 win over the Blackhawks.
Hart allowed two goals on 26 shots in Tuesday's 5-2 win over the Blackhawks.
