The National Hockey League announced Friday the cancellation of the 2012-13 regular-season schedule through November 30 because of the absence of a Collective Bargaining Agreement between the NHL Players’ Association and the NHL.

A total of 326 regular-season games – 26.5 percent of the season -- were scheduled for Oct. 11 through Nov. 30.

This is the third round of cancellations since the lockout began.

With little having been resolved, the New Year's Day Winter Classic is also at risk, and could be canceled as early as next week, a source told ESPNNewYork.com.

NHL Commissioner Gary Bettman said earlier this week that the negotiation process was likely to get tougher going forward. The league is also expected to inform the NHL Players' Association