Australian Paralympic great Kurt Fearnley has finished runner-up in the Chicago Marathon's wheelchair category for the second straight year.
Fearnley, a five-time Chicago winner, beat all but Switzerland's Marcel Hug home, finishing with a time of one hour, 30 minutes and 24 seconds.
Hug pipped Fearnley to claim victory 12 months ago in Chicago.
A pack of 15 racers were in close competition over the opening 35 kilometres before the Swiss kicked clear to win by more than a minute.
"I've had some good results here in the past but today just wasn't my day," Fearnley said.
"Marcel is a hell of an athlete on an incredible run. Full credit to him.
"To pull away from the pack at that stage of the race and build a minute lead is something else."
Fearnley, 37, has never finished lower than second in Chicago, having now recorded five wins and four runner-up finishes.
"I love this race and it suits my strengths so I came into today pretty confident," he said.
"But sometimes someone else pulls out a world-beating performance to beat you and you just have to suck it up, pat him on the back, and come back next time with a bit more mongrel in the tank to try and be that world beater."
Fellow Australian Madison de Rozario finished fourth in the women's wheelchair race.
In the elite runners category, Galen Rupp became the first American winner of the men's race since 2002. Australia's Commonwealth Games gold medallist Michael Shelley finished 10th.
In the women's event, Australian Lisa Jane Weightman was sixth with Ethiopia's Tirunesh Dibaba the winner.