It probably wasn't the Blackhawks' most ideal situation: killing off a slew of Detroit penalties, including four in the second period, a night after playing a tough division game in Columbus.

But for this Blackhawks team, it was just one more challenge in this early season to meet.

The Blackhawks killed off six Detroit power plays, including 43 seconds of a 5 on 3, and Corey Crawford stopped 29 of 30 as the Blackhawks beat the Red Wings 2-1 in overtime at the United Center on Sunday night. It was a memorable night for the Blackhawks, whose 6-0-0 mark is the best start in franchise history.

Nick Leddy scored the winner in overtime, his first goal of the season. Duncan Keith scored a power-play goal early.

Still, it wasn't so much about that record as it was the points they're accumulating here in the early going.

"We let you guys make a bigger deal out of it than we will," Keith said of the 6-0-0 mark. "We're focused on getting better, taking it game by game, and we're not worried about records. We want to get better, get points and get a lead in the standings."

On Sunday, the Blackhawks were once again putting forth that team effort, this time on those special teams that were such a source of angst last season. The Blackhawks have now killed off 22 of the 23 power plays they've faced.

"It was huge. It was a great second period of kills," coach Joel Quenneville said. "From our forwards, to our D blocking shots to key saves by Crow, it was a group effort. Even that 5 on 3 was special. From the willingness to get in the way of shots and the awareness to what they're capable of doing; that's a dangerous power play and we dodged a bullet. To me, that was the key of the game."