"They've been a big part of this team for so long now, you know, it doesn't surprise us," Penguins coach Mike Sullivan said. "These guys are good hockey players. They add another element to our team. The energy that they bring, the enthusiasm that they bring to the rink, they've stepped up and made some big plays for us.
"As I've said all along, we have a nice chemistry of veteran players and young guys here that complement one another. I really think they enjoy one another. What I really like about this group is that they play for each other and I think that shows and it's a neat dynamic to watch unfold."
That chemistry is apparent on Pittsburgh's top two lines.
Sheary plays left wing with center Sidney Crosby and right wing Patric Hornqvist. Rust plays to the right of center Evgeni Malkin and left wing Chris Kunitz.
Rust, who opened the scoring Monday with his fourth goal in three games, has elevated his game to a level few foresaw.
After scoring both goals in Pittsburgh's 2-1 Game 7 win against the Tampa Bay Lightning in the Eastern Conference Final, Rust carried that momentum into Monday when he batted a rebound past goalie Martin Jones with 7:14 remaining in the first period. Rust now has six playoff goals, the most by a rookie in Penguins history.
Rust is the sixth rookie to score in three consecutive playoff games since 2011, joining Los Angeles Kings forward Tyler Toffoli (2014), Columbus Blue Jackets forward Boone Jenner (2014), New York Rangers forward Chris Kreider (2012), Kings forward Dwight King (2012) and Sharks center Logan Couture (2011).
But Monday could have ended better for the 24-year-old.
Rust exited the game after being hit by Patrick Marleau 4:47 into the third period, returned a few minutes later and then left again. Sullivan said Rust is day-to-day with an upper-body injury.
"It was nice when we were out there carrying the pace and carrying the play," Kunitz said. "Hopefully he's OK. We've had a good run here together that we've really contributed offensively and carried the play. We need him in the lineup and hopefully he'll be OK."