Shelley Duncan, the UA’s career home run leader, will be leaving his position as an Arizona undergraduate baseball coach to become manager of the Arizona Diamondbacks’ Rookie League team in Hillsboro, Ore. Check back in 10 years: Duncan has the personality and acumen to be a big-league manager. Duncan, a CDO grad who retired from baseball last summer, will hold his annual Tucson Youth Baseball Association camp Saturday from 10 a.m. to 1 p.m. at the Kino Sports Complex. Among those who will serve as instructors are Orioles shortstop J.J. Hardy and Tigers second baseman Ian Kinsler. Information: tucsonyouthbaseballassociation.org.