BALTIMORE — The Astros have standing offers for No. 1 starter Bud Norris but are hoping a team increases its pitch during the final hours before a 3 p.m. CT non-waiver trade deadline, a league source with knowledge of negotiations said Wednesday morning. Pittsburgh, Baltimore and Arizona have shown recent interest in Norris and a fourth team could come through as late candidate. The offers the Astros have received are “pretty soft,” the source said. As a result, the organization is waiting the situation out with the belief a club could meet its demands in a last-minute scenario. “I still think he’s gone and he’ll be traded,” the source said. [...]