Great Britain's Paralympic gold medallist Jonathan Fox has finished as the fourth-quickest swimmer in the first heat of the men's S7 50m freestyle.
Fox, who won the men's S7 100m backstroke, managed to finish the race in a time of 29.38s but it wasn't enough to finish in the top three positions.
The Brit faced tough competition from US athlete Lantz Lamback, who finished the race in a time of 28.29s, as well as Yevheniy Bohodayko and Pan Shiyun, who finished above the Brit.
Despite finishing fourth, Fox will contest for a medal along with his compatriots Matthew Walker and Josef Craig.