"You get traded, and first time coming back, it's surreal that I hit the game-winning homer here," Fowler said.
He connected off former teammate and friend LaTroy Hawkins, who threw an 0-2 slider or cutter, Fowler wasn't sure. But he got all of it.
"LaTroy has a history of getting me out," said Fowler, who is now 1-for-3 against Hawkins. "I get 0-2 right there, and I'm sitting there like, 'Man, not again.' I stepped out and took a deep breath. Hats off to my teammates. They battled in that inning. Welington [Castillo] comes in and gets a key at-bat, [Arismendy Alcantara's] walk, that sets the table for everything."
Hawkins walked Alcantara with one out in the ninth, then struck out Mike Olt before Castillo delivered a pinch-hit RBI single. That set up Fowler.
"It's one of those, you hit it, and it's almost like you didn't feel it," Fowler said. "You know it. Then you see [right fielder Carlos Gonzalez] just like [looking at the ball]. I was excited. I should be."
Fowler has been a perfect fit in the leadoff spot for the Cubs.
"Everything he's doing, he's really focused," manager Joe Maddon said.
Will Fowler try to touch base with Hawkins? Maybe not right away, he said.
"Hawk's my guy," Fowler said of the Rockies reliever. "He came to my wedding."
Carrie Muskat is a reporter for MLB.com. She writes a blog, Muskat Ramblings, and you can follow her on Twitter @CarrieMuskat. This story was not subject to the approval of Major League Baseball or its clubs.