Heavyweight champion Muhammad Ali ?Cassius Clay? (left) loses smile and raises hand briefly during exchange with Sonny Liston after weight-in ceremony at Lewiston, Me., arena on May 25, 1965. The exchange never went beyond words and the action will be a 15-round title bout. In center is Drew Brown, an Ali trainer. Clay weighed 206 and Liston 215 ¼. (AP Photo)
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