PITTSBURGH — Pittsburgh Pirates pitching prospect Hunter Barco is starting to find his rhythm at the Triple-A level, and his latest performances suggest he may be turning a corner in his development. The 24-year-old left-hander, ranked as the Pirates’ No. 5 prospect and MLB Pipeline’s No. 85 overall, delivered two dominant outings this week for the Indianapolis Indians, further solidifying his status as one of the organization’s most promising arms. Barco’s strong week began on June 24 against the Omaha Storm Chasers, where he tossed six shutout innings, allowing just five hits and one walk while striking out six. The performance was a much-needed bounce-back after some early struggles since