Soon after learning he had been named American League Rookie of the Month, Astros right fielder George Springer walked across the home clubhouse to hug and thank second baseman Jose Altuve and several other teammates.

Then Springer welcomed slugging first baseman Jonathan Singleton, the Astros’ latest premier prospect to arrive at Minute Maid Park amid lots of expectations not to mention a five-year, $10 million contract. “Get your popcorn,” Springer said.

Singleton justified his pal’s boast with an RBI walk and a majestic solo home run to right-center field to help the Astros beat the Angels 7-2 in the first game of a three-game series at Minute Maid Park.

Soon after the Angels had cut the Astros’ lead with a pair of home runs in the top of the eighth, Singleton answered with his first major-league blast to send a roar through the crowd of 23,219. Chris Carter followed with another homer to right.

With his first major league hit, Singleton became the fourth Astro to homer in his first career game.

After Springer and the Astros recorded their first winning month since September 2010, Singleton’s June arrival gives fans yet another reason to believe the Astros are already climbing out of the Grand Canyon of despair that were the 2011, 2012 and 2013 seasons.

“I think it means the system is working,” Astros owner Jim Crane said of Singleton’s promotion. “I think it just proves that we’re developing the talent and they’re getting to the big leagues.”

Singleton gives the Astros a first baseman worthy to play the position that was manned with distinction by 1994 National League MVP Jeff Bagwell from 1991 through 2005.

“I’m extremely blessed to be here, but I’m also extremely happy that (Singleton is) here to help,” Springer said. “You guys are going to see a great baseball player tonight.”

Singleton definitely made his presence felt. Showcasing the patience that helped him draw a Pacific Coast League-leading 42 walks before was called up to the majors on Monday, Singleton drew a four-pitch walk to drive in the third run of the five-run rally in the third inning.