BALTIMORE — The circus the Astros started teasing at the end of the 2012 season, when the large-market club began slashing payroll in hopes of competing three years down the road, finally arrived 105 games into the 2013 season at Oriole Park. No. 1 starter Bud Norris was on track to make his scheduled appearance as of 11 a.m. Tuesday. Then he was suddenly scratched, and trade rumors that had hovered for nearly a year crashed down. Norris was instantly tied to multiple teams, including Baltimore — whom the Astros played — Pittsburgh, Boston and Arizona. But he was still an Astro by 3 p.m., when he walked into the [...]