Complex sentence: While a freshman at U.C. Berkeley, he won the 1964 Trampoline World Championships in London, and earned All-American honors and won an NCAA Championship in vaulting (1964) and a USGF championship in floor exercise (1966).
Split into simpler sentences: While a freshman at U.C. Berkeley, he won the 1964 Trampoline World Championships in London. While attending U.C. Berkeley, he earned All-American honors and won an NCAA Championships on vaulting (1964) and a USGF championship in floor exercise (1966).