"It's definitely a great way to have everything kicked off with a new team," Jackson said after the game, with his phone ringing in the background, presumably with words of congratulations. "I've been through a lot of ups and a lot of downs."
Over the past three years, Jackson has bounced among four Major League teams. He went from being a starter to being used in the bullpen. He went from a 2.91 ERA as a reliever with the Cubs in 2014 to a 7.02 ERA across two Minor League levels with the Marlins and Padres this season.
In his first opportunity to get back into the starting rotation with San Diego, he flashed back to a 2010 season when he no-hit the Rays and started 32 games with the D-backs and the White Sox.
Sunday's win was Jackson's first as a starter since Aug. 3, 2014. It was also a confirmation of what he's been telling himself for a while now.
"I know I have life still in my arm," said Jackson, who has started for nine teams, the most among active Major League pitchers. "I know my abilities, I know what I can do. I've been telling people a long time, I still feel like I have a lot on the table.
"I still think I'm in my prime and I still think I have a lot to offer."
Jackson offered plenty Sunday, with two hits and an RBI to go along with his 6 1/3 innings on the mound, where the only hit he allowed just happened to be a three-run homer.
"I mean, he's great," said Padres catcher Christian Bethancourt, who played with Jackson with the Braves last season. "It's a new window for him, new opportunity here now with the Padres. ... I think he's off on the right foot."
Jackson agreed it was a nice way to join the team, but he isn't going to be lingering on this outing -- what was just eight outs short of becoming his second career no-hitter.
He's going to keep trying to prove he belongs here.
"The tenacity is there, the perseverance is there," Jackson said. "I believe in what I can do. I've always believed in what I can do. It's just a matter of going out and proving it once you get in between the lines."
Carlos Collazo is a reporter for MLB.com based in San Diego. Follow him on Twitter @CarlosACollazo. This story was not subject to the approval of Major League Baseball or its clubs.