Sara runs the race in 9.25 seconds, Alex runs the race in 8.625 seconds, and Tonya runs the race in 9.8 seconds-Who has the winning time?

Three runners run 100 yards race. Sara runs the race in 9.25 seconds, Alex runs the race in 8.625 seconds, and Tonya runs the race in 9.8 seconds. Who has the winning time?