Danny Duffy noticed a flaw in his delivery a few weeks ago: His front hip was opening too soon and he was yanking pitches. "Obviously, it takes more than 30 pitches in a side session," he said. "Repetition is everything." Duffy's mechanics seemed fixed. Duffy defeated the New York Yankees for the second time in a six-day span and rookie Jorge Bonifacio capped a three-run, seventh-inning rally with a go-ahead, two-run homer that led the Kansas City Royals to a 6-2 victory Tuesday night. Read more http://www.espn.com/mlb/recap?gameId=370523110