Pirates prospect report: Konnor Griffin hitting a lull, but Greensboro tosses another perfect game

Post-Gazette Pirates insider Colin Beazley recaps the week in Pirates prospect news, which included a second perfect game in nine days from Class High-A Greensboro ahead of the MLB trade deadline next week. He also gives updates on individuals in the minor league system including Bubba Chandler, Billy Cook, Jared Triolo, Konnor Griffin, Tony Blanco Jr, Edward Florentino and more.