Mealey's (May 29, 2018, 1:22 PM EDT) -- SAN FRANCISCO — A federal court made proper determinations when allowing a police practices expert to testify while excluding testimony from a medical expert for a man who says he was injured by police when they used excessive force to arrest him, the Ninth Circuit U.S. Court of Appeals held May 24 in an unpublished opinion (Gregory Kelly v. Las Vegas Metropolitan Police Department, et al., No. 15-16175, 9th Cir., 2018 U.S. App. LEXIS 13743)....