Source: Del Negro aggressor, not Paxson

Chicago Bulls coach Vinny Del Negro initiated the physical contact with executive vice president John Paxson during an altercation on March 30 -- contrary to a report that painted Paxson as the aggressor -- a source close to the situation told ESPNChicago.com.

Yahoo Sports reported Tuesday that Paxson grabbed Del Negro by the tie, jabbed him twice in the chest and seemingly challenged him to a fight because Del Negro exceeded the time limit management set for Joakim Noah, who has been recovering from plantar fasciitis in his left foot. In Yahoo Sports' report it was suggested that Del Negro didn't retaliate against Paxson during the altercation because he was worried the Bulls could void his contract.

However, a source close to the situation disputed who initiated that argument, and said that it wasn't the first altercation Del Negro has had with management. The source said that Del Negro and Bulls general manager Gar Forman had an altercation in Forman's office that was similar, but did not give details.

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