James Turner says he will learn from a contentious start in the T36 100m final which cost him another Paralympic gold medal.
Turner surged home to win silver on Saturday in Tokyo, but was visibly annoyed he didn't collect a second gold after his 400m title.
The 25-year-old from Wollongong was hot favourite for the double after entering the sprint final as world record holder and fastest qualifier.
The unsettled field was re-set before Malaysian athlete Mohamad Puzi, who was in the lane next to Turner, moved on the line which put the Australian off.
After his poor start Turner powered through the field to land a silver behind China's Deng Peicheng in a time of 11.85, well off Turner's world mark of 11.72.
Turner slapped his thigh and shook his head in disappointment after the race.
Australian officials considered lodging a protest but it would have likely only seen fourth-placed Puzi disqualified rather than a re-run.
Turner said he only had himself to blame.
"I absolutely let myself get distracted," Turner told Channel Seven.
"I saw movement next to me and my body wanted to go with it and I let it so I've really got to put the blinders on for next time.
"It was my mistake to let that get to me and I've got to learn from it."
Also winning a gold in the 800m in Rio which has been discontinued in the Paralympic program, Turner, who has cerebral palsy, said missing a third would make him hungry for Paris in three years time.
"Come Paris I want to be in a position where I don't make those mistakes and I can capitalise on every opportunity," he said.
In other early results on the track, Rheed McCracken finished sixth in the men's 800m T34 final.
