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LAS VEGAS— Armed with his new contract and an even more chiseled physique, Jericho Sims was the most impressive Knick in their Summer League opener Friday night. His sixth dunk of the evening, an alley-oop from Quentin Grimes, was Sims’ final highlight, and, believe it or not, something of a throwback. As Grimes revealed in one of those fun anecdotes often reserved for...