PITTSBURGH — Pittsburgh Pirates starting pitcher Jared Jones has been working diligently to get back to the major leagues and it might come earlier than some expected. Pirates general manager Ben Cherington said on the Pirates Insider Show on May 10 that there's a possibility that Jones could pitch for them at the end of the month, but nothing is certain as of now. Jones just made his second start on his rehab assignment and first one with Triple-A Indianapolis on May 6, which Cherington was impressed with and revealed that Jones will make his third start on his rehab assignment with Double-A Altoona on May 12. “It’s certainly possible with the way the calendar works out, but we’re going to take it an outing at a time," Cherington said. "He had a good first outing in Indy, we’re trying to use the home games, so he’ll pitch for Altoona. So he’ll toggle back and forth between Double-A and Triple-A as we get deeper into the rehab assignment.…