Tanner Pearson cut it to 4-1 at 14:58, scoring on a wrist shot from just inside the left circle after being set up by Alexander Holtz.
Fiala scored to make it 5-1 one day after being scratched against the Sharks for missing a team meeting. He was also benched for the final 24:05 of a 3-2 win against the Utah Hockey Club on Saturday for taking too many penalties.
“My alarm didn’t go off,” Fiala said. “Honestly, that's the truth, and I take full responsibility, and I have to be better than that. I felt terrible and let down the teammates, and so of course I had something to make up for.”
Joel Edmundson pushed it to 6-1 at 8:03 of the third on a wrist shot from the left point.
Dorofeyev made it 6-2 at 11:04 on a power-play goal off a pass from Stone, and Dorofeyev buried a backhand at 17:03 for the 6-3 final.
“You need to win games in the NHL [when] scoring three goals on the road,” Cassidy said. “Should be good enough to get points on nights and win some games. And we have scored three in Tampa, three in Florida, three tonight, and at the end of the day, got one point to show for that. So that tells me our problems are on the other side of the puck.”
Golden Knights center Tomas Hertl left the game following a high hit from Mikey Anderson at 18:45 of the second period, but he returned in the third period, picking up the secondary assist on Dorofeyev’s second goal.
“You don’t want to see your guy take any hits, right, but he said he just stepped on his own stick going off, so looked a lot scarier than it was, and glad that he’s OK,” Stone said.
NOTES: Kopitar (800 assists) ranks fourth in assists among active players, trailing Sidney Crosby (1,013), Patrick Kane (818) and Malkin. … Clarke has one goal and six assists during a four-game point streak.