Garrard described his title win as a “massive thrill” as he returned to the enclosure after the last race.
“I was pretty excited halfway up the lane,” he said of that final event, knowing he had the championship in the bag.
“It was hard to contain the emotion to be honest.”
Garrard admitted to some stressful moments as his rivals closed the gap in the middle of the program but kept his cool and delivered against some of his biggest idols in the sport.
“You don’t say it can’t happen, but it’s hard to say it will happen.
“To have such a good night last night and come out and be able to back it up tonight, I couldn’t be any happier.
He was also full gratitude for the slot holders who put their faith in him.
“I can’t thank everyone involved enough,” he said.
“It’s hard to sit down and say you’re going to give a 21-year-old like me a shot at something like this but I’m just so appreciative and so lucky.”