Bo Porter couldn’t trump Davey Johnson’s Washington Nationals. But the Astros’ first-year manager was the main attraction Tuesday morning at Space Coast Stadium. Facing his former club for the first time since being hired by the Astros on Sept. 27, 2012, Porter addressed a larger-than-normal media contingent curious about his new life leading a non-playoff contender. “He’s fully prepared to be an outstanding manager in the big leagues. He’s very fundamentally sound in all aspects of the game and he’s a great judge of talent,” said Johnson, who led the 2012 Nationals to the best record in baseball before falling to St. Louis in a National League Division Series. He added: “I tell him it’s great. You’re in your hometown. It doesn’t get any better than that.” The initial stage of Porter’s new gig is based upon changing the Astros’ losing culture. But Porter’s also tasked with guiding the club’s rebuilding effort at the major-league level. Just don’t mention the “R” word to the proud Porter. “What’s that word? …I didn’t even know that word was in the dictionary,” he said. “I haven’t used that word, not one time, since September 27 last year. And I’m not planning on using it.”