6. Los Angeles Kings (7) upset Detroit Red Wings (2), 2001 Western Conference quarterfinals

The Wings were a 111-point team taking on a 92-point Kings squad, and the difference in the standings was evident in the first two Detroit victories in the series. But Los Angeles won Game 3 before the series was turned on its head in Game 4: The Kings rallied for three goals in the final 6:07 to send the game to overtime, where rookie Eric Belanger(notes) scored to knot it at two games apiece. LA would win four consecutive games to eliminate the Wings, including Adam Deadmarsh's series-clinching tally in overtime of Game 6.

via The 10 biggest hockey upsets of the last decade - Puck Daddy - NHL - Yahoo! Sports.