Complex sentence: In 1922 he won the California High School 100 yard championship and the State 100 meter spring at 10.4 seconds and in 1923 went on to win both Southern California, CIF sprint tittles including the 100 meter at 10.2 seconds and the National Interscholastic 220 yard title.
Split into simpler sentences: In 1922 he won the California High School 100 yard championship and the California State 100 meter at 10.4 seconds. In 1923 he went on to win both Southern California, CIF sprint titles including the 100 meter at 10.2 seconds and the National Interscholastic 220 yard title.