Complex sentence: He became World Champion in 2000 despite not winning any grands prix in that season, however being the only rider to reach the semi-finals in all 6 races was enough to secure his first and only world title.
Split into simpler sentences: He became World Champion in 2000 despite not winning any Grand Prix meetings in that season. However he was the only rider to reach the semi-finals in all six meetings which was enough to secure his first and only world title.