On the court, Wizards assistant Sam Cassell talks enough trash to keep a whole team of sanitation workers busy. But when Cassell invited Army Sgt. Chris Powell to the main court at Verizon Center on Monday, he had something in mind other than belittling his opponent: Cassell wanted to help Powell with his shooting stroke. Cassell watched Powell miss a few jumpers, then offered some simple advice to improve his accuracy...
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