In 1908, Chapman won the 100 m at the Olympic Trials and was eliminated in the heats of the 100 y at the AAA Championships and the 100 m at the Olympics. He improved to reach the final of the AAA 100 y in 1909 and 1910. He was educated at Magdalen College School, Brackley.
Personal Best\: 100 – 11.2 (1908).
|1908 Summer||London||Athletics||Men's 100 metres||Great Britain||GBR||2 h10r1/3|
|1908 Summer||London||Athletics||Great Britain||Round One||Heat Ten||2||11.3est||at 3 yds|