Blackhawks' Keith out 4-6 weeks after surgery

Chicago Blackhawks defenseman Duncan Keith underwent successful surgery to repair a meniscal tear in his right knee and is expected to miss 4-6 weeks, the team announced Tuesday.

Keith, 32, played through the Blackhawks' last game, a 4-1 win over the Columbus Blue Jackets on Saturday, and was on the ice for 27 shifts and 25:34 of ice time. He has two assists and has averaged 24:21 of ice time in six games this season.

Keith is a two-time Norris Trophy winner and was voted the Conn Smythe Trophy winner after the Blackhawks' Stanley Cup championship run last season. He has never missed more than eight games in a season since coming into the league as a rookie in 2005. He has 75 goals and 342…