Boldy pushed it to 2-0 just 49 seconds into the second period with a snap shot in the slot off a centering pass from Kirill Kaprizov.
Batherson cut it to 2-1 at 7:43 on the power play with a snap shot below the left face-off circle off a cross-crease pass from Brady Tkachuk.
Chychrun tied it 2-2 with a power-play goal at 2:42 of the third period. Tim Stutzle fed Batherson below the goal line, who found Chychrun with a touch pass for a one-timer from the bottom of the right circle.
“They got some experienced D-men back there who make a living boxing guys out,” Batherson said. “It was tough. When Fleury sees the puck, he’s going to make the save most of the time.”
NOTES: Senators forward Angus Crookshank left during the first period with a lower-body injury. He was still being evaluated after the game and no update was provided. … Fleury became the second active goaltender to record at least 50 wins with three or more different franchises (Minnesota, Vegas Golden Knights, Pittsburgh Penguins), joining Frederik Andersen (Carolina Hurricanes, Toronto Maple Leafs, Anaheim Ducks).