Gerrit Cole was the first-overall pick in the MLB amateur draft in 2011 after starring for three seasons in college. He was picked by the Pirates and made his debut at 22, halfway through his second full profe sional season. Paul Skenes is on a similar, but not identical, path. Paul Skenes may be called up soon by the Pirates. USA TODAY Sports via Reuters Con The fireballing 21-year-old has...