The A's scored a run in the 12th, and Keith Foulke came in to save Devine's victory.
"It was a long day, but it all worked out," Devine said. "I drove from Sacramento to Oakland [on Wednesday night]. The flight in Denver got delayed because they had to de-ice the wings of the plane, but I got to Toronto in time for the game."
Fortunately, Devine is accustomed to travel difficulties. A previous incident made what he went through on Thursday seem easy.
"Once, when the Braves called me up, I got there after the game started, went straight to the bullpen and got in the game," he said.
Still, he was happy when the Athletics' flight landed in Cleveland early Friday morning.
"I was glad when we got to the hotel," he said. "I had a good night's sleep."
The 24-year-old right-hander deserved it after going into a pressure situation and getting through it. But he knows he can't dwell on facing a hitter of Thomas' caliber.
"I was only thinking about making my pitches and putting a zero on the board," he said.
Manager Bob Geren said that Devine struck out Thomas with a slider.
"That was a nice pitch," Geren said. "That was his first game of the year. He was put in a pretty tough spot. He did a great job."
Devine, acquired from the Braves in January's Mark Kotsay trade, had two scoreless outings in Sacramento.
"Things have been going extremely well," he said. "I feel like I'm back to my old self, when I was in college."
Devine was the Braves' No. 1 Draft pick in 2005 after pitching at North Carolina State.