Complex sentence: His results gradually improved, peaking at the end of the decade and the beginning of the next with a silver medal in men's singles at the 2000 Summer Olympics and the gold medal at the 2001 IBF World Championships over Denmark's Peter Gade.
Split into simpler sentences: His results gradually improved, peaking at the end of the decade and the beginning of the next. He earned a silver medal at the 2000 Summer Olympics in men's singles, and won men's singles the 2001 World Championships over Denmark's Peter Gade.