Complex sentence: At the 1924 Summer Olympics, the favourite for the 110 m hurdles was American George Guthrie, but as the race started, Atkinson and another American Daniel Kinsey got off to a quick start and ran nearly together until the eighth flight when Atkinson edged ahead.
Split into simpler sentences: At the 1924 Summer Olympics, the favourite for the 110 m hurdles was American George Guthrie. But as the race started, Atkinson and another American Daniel Kinsey got off to a quick start and ran nearly together until the eighth flight when Atkinson edged ahead.