The sneaker wars can get pretty serious in the NBA, serious enough to take a shot at an injured player apparently, as long as he's not your guy.

After Derrick Rose suffered a season ending ACL tear during the Chicago Bulls first round playoff series against the Philadelphia 76ers.

Rose is an Adidas athlete. He signed a deal with the sneaker and apparel company that can pay him as much as $200 million over 13 years. He turned down a deal from Nike when he signed with Adidas, and it would seem that Nike, or at least some of their employees are upset about that.

Jason Petrie, a senior footwear designer at Nike tweeted You got one guy only getting stronger and one guy breaking down before our very eyes. You chose poorly Pooh... #shouldasignedwithNIKE #GWS.

Pooh is Rose's nickname from his grandmother, and it isn't entirely clear who the guy getting stronger, is but the idea that Petrie seems to be getting at is patronizing and stupid, not to mention petty.

Petrie seems to indicate that Rose wouldn't have hurt himself had he been wearing shoes emblazoned with the Nike swoosh instead of the three stripes of Adidas.

Reveling in the injury of a star player as a way to promote a brand is probably not a good idea, but in the instant world of Twitter people make mistakes and often have a change of heart moments later. Not so for Petrie.

He followed it up with six tweets that either defended his original statement as I speak my mind, or to really enjoying the dust storm of angry Bulls fans he kicked up with the tweet.

Nike has not issued a statement about the tweets and so far Petrie has not apologized or made any comment beyond what is listed below.