The NBA will play a shortened season — if it plays at all — after labor negotiations broke down for the second time in a week.

NBA Commissioner David Stern canceled all November games on Friday, the 120th day of the lockout.

“It’s not practical, possible or prudent to have a full season now,” said Stern, who previously canceled the first two weeks of the season.

Just a day earlier, Stern had said he would consider it a failure if the two sides didn’t reach a deal in the next few days and vowed they would take “one heck of a shot” to get it done.

Owners are insistent on a 50-50 split of revenues, while players last formally proposed they get 52.5 percent, leaving them about $100 million apart annually. Players were guaranteed 57 percent in the previous collective bargaining agreement.