The Washington Times - August 29, 2011, 04:22PM

According to a report by HoopsWorld, NBA league sources have set September 15 as the last possible date for the NBA owners and the players union to reach a deal on a new collective bargaining agreement for the 2011-2012 NBA season to be unaffected by the lockout. 

If that date passes and no agreement is reached, training camps and pre-season games will start getting cancelled. League officials say that the loss of even one pre-season game will have the same impact as if the entire pre-season is lost, from an economic and financial standpoint.  

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At that point, HoopsWorld reports, sponsors are likely to change their advertising plans, and patrons who purchased season tickets will begin asking for refunds. 

The pre-season is scheduled to begin on October 9, and the first regular season game on November 1.