So he did what 23-year-olds do. He tweeted, ''cant believe my childhood dream has come true! want to thank my family friends and all the support from the (hash)570!''
Problem is, the Padres like to make such announcements.
''We had a discussion about that yesterday,'' old-school manager Bud Black said.
''It was a good day in the big leagues. I think his parents were here, some relatives were here and maybe a few people from the 570 were here,'' Black said, referring to the area code for Spangenberg's hometown of Clarks Summit, Pennsylvania.
Spangenberg, the team's first-round pick in the 2011 draft, had his contract selected from Double-A San Antonio and started at third base. He came up with the bases loaded and one out in the fifth inning and singled to right off reliever Eury De La Rosa for a 3-0 lead.
''He got me down 0-2 but I was just looking for a pitch up in the zone a little bit that I could put the bat on the ball and he just happened to leave a slider a little bit up and I got enough of it to find a hole,'' he said.
Spangenberg is the third player in Padres history to have multiple RBIs in his big league debut.
His parents, two brothers and sister were at the game.
''It's just nice to share this moment with them because they've put in as much time and effort with this as I did,'' Spangenberg said.
So all's well in the 570?
''There's unbelievable support there and they have my back all the way. I'm just thankful for them,'' he said.
Ross (13-12) pitched six strong innings, allowing one run and six hits while striking out eight and walking two. It was his 14th straight start of going six or more innings and allowing six or fewer hits. He is 7-6 with a 1.93 ERA in that stretch.
A fifth-inning comebacker by Didi Gregorius hit off Ross' glove but he threw out the runner. He tweaked his left knee on the play, which he and the training staff didn't realize until later.
After Ross allowed a leadoff single by David Peralta in the sixth, manager Bud Black and a trainer came out to check on the tall right-hander. Black left Ross in the game. He allowed two more singles, including an RBI hit by Miguel Montero, before striking out the side.
''I felt at that point he was our best pitcher,'' Black said.
Ross said the mound visit ''gave me a chance to refocus and get back to execution.''
Striking out the side came from ''just grinding it out, really,'' he said. ''I just minimized. That's kind of the focus, First and third, no outs, just trying to minimize. Rene (Rivera) called some good pitches and worked his butt off back there. It was a good inning.''
Kevin Quackenbush struck out the side in the ninth for his second save in three chances.
Arizona's Trevor Cahill (3-10) went only four-plus innings, allowing three runs and five hits while walking six and striking out five.
''He walked six guys. That's way too many in four innings,'' manager Kirk Gibson said. ''He wiggled out of it the best he could.''
The Padres also promoted LHP Robbie Erlin and RHP Leonel Campos from Triple-A El Paso. Erlin made his big league debut with San Diego in 2013. Campos will make his big league debut the first time he pitches.
WALK THIS WAY
Rivera drew four walks for the Padres, including two intentional. He is the 30th player in franchise history to do so and the first since Chase Headley on July 30, 2012. Rivera was the ninth player and first catcher in team history to not register an at-bat despite making four or more plate appearances in a game.
Arizona: The Diamondbacks reinstated OF Cody Ross (strained left calf) from the 15-day disabled list and RHP Daniel Hudson (reconstructive elbow surgery) from the 60-day DL. Hudson likely will work in relief. He hasn't pitched for Arizona since June 26, 2012, when he tore the ulnar collateral ligament in his right elbow against the Braves.
Arizona: Wade Miley (7-10, 4.30 ERA) has no record and a 3.86 ERA in two starts vs. San Diego this year. He is 1-6 with a 4.96 ERA in 11 career starts against the Padres.
San Diego: Odrisamer Despaigne (3-5, 2.54 ERA) is 1-1 against Diamondbacks this year, including a 5-1 loss at Arizona on Aug. 22.