Reinhart put the Sabres ahead 2-1 with 29 seconds left in the second with a power-play goal from the slot.
"It's gone from real good the first 25 games to having a lot of trouble right now," Vegas coach Gerard Gallant said of the penalty kill. "I hate to say it, but I don't see a whole lot of difference. They're still doing the same type of things, whether it's unlucky or bad opportunities. The first one, we should have got it cleared. We didn't, the guy picked his pocket, so things happen like that. But overall, they're doing the same things, it's just not working right now."
Smith's wrist shot from the right circle on the power play tied it 2-2 at 1:43 of the third period.