CHICAGO (AP) — A federal jury at a civil trial in Chicago has begun deliberating on the question: What’s the market value of Michael Jordan’s name?

As they began going through evidence Friday, jurors had to calculate how much the now-defunct grocery chain Dominick’s should pay the ex-Bulls star for invoking his name in an ad without permission. They sent one note to the judge, saying: “We need a calculator.”

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In his closing argument, Jordan attorney Frederick Sperling appealed to city pride, saying about Jordan as he sat nearby: “He gave us six (NBA) championships.”

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Jordan’s lawyer suggested the ad was worth $10 million.

Dominick’s attorney Steven Mandell said he’s as proud as anyone about the championships Jordan brought to Chicago. But he said jurors should award him no more than $126,000.

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