Jordan Kyrou extended a seven-game point streak with a goal, while Nick Bjugstad and Mathieu Joseph also scored for St. Louis. Joel Hofer stopped 20 shots for the Blues, who lost their fourth straight game.
St. Louis has lost five of their last six games and allowed more than six goals in four of those defeats.
Crosby iced the game with a breakaway goal with 3:21 left in the third off a pass from Rust to make it 5-3. Crosby had the primary assist on Wortherspoon’s goal and the secondary helper on Rust’s second goal.
Elsewhere in the NHL on Monday:
SENATORS 7 BRUINS 2
OTTAWA, Ont. (AP) — Drake Batherson and Tim Stutzle each had two goals and an assist to lead Ottawa over Boston for its third straight win.
Claude Giroux, Nick Cousins and Fabian Zetterlund also scored, and Leevi Merilainen made 26 saves. It was a redemption effort of sorts for the 23-year-old goalie who allowed seven goals to the Buffalo Sabres on Oct. 15 in his only other start this season.
Morgan Geekie scored on Boston’s first shot of the night after a defensive-zone turnover by the Senators. It was all the offence the Bruins could muster until their final shot of the game when Viktor Arvidsson scored with less than 10 seconds left.
Jeremy Swayman made 17 saves for the Bruins, who are in last place in the Atlantic Division.
Batherson’s first goal of the night, scored on the power play, tied the game 1-1 at the midpoint of the first period.
The Associated Press