Original sentence: At a time when many didn't finish Olympic marathons, Jimmy Dellow placed 13th in 2 hours, 46 minutes.In 1910, four laps of a half mile track, 'Jimmy' led the field, followed by three other local boys.In 1912, six miles on the same track, Jim Dellow was second behind Jim Corkery, with brother Bill coming in fourth
Edited sentence: ("Jimmy") Dellow was a Canadian middle and distance runner of the 1910s.At a time when many did not finish Olympic marathons, Jimmy Dellow placed 13th in 2 hours, 46 minutes.He competed in the marathon at the 1920 Summer Olympics.In 1910, four laps of a half mile track, Dellow led the field, followed by three other local boys.In 1912, six miles on the same track, he was second behind Jim Corkery, with brother Bill coming in fourth