Washington tied it up to start what would become a back-and-forth second period, as Damien Riat beat Colin Delia in goal at 2:06 of the middle frame. Just over two minutes later, Nylander roofed a backhander following a Boqvist shot from the point to put the visitors up 2-1.
Goals from Travis Boyd and Aliaksei Protas within 92 seconds of each other in the middle of the second gave the home team a 3-2 lead. That is until Boqvist circled the net and then put a shot in the far, top corner to tie the game 3-3 at 12:46 of the second period.
Deadlocked at 3-3, the game headed to overtime, where Tom Wilson scored the winner off the rush at 2:35 of the extra frame.
The Blackhawks are back in action on Tuesday night as they travel to Detroit for a 6:30 p.m. CT puck drop. You can catch all the action on NBC Sports Chicago+, ESPN Radio 1000or streaming onNHL.TV and the MyTeamsApp