Complex sentence: She debuted in the World Cup in 1987, and achieved her first win in a downhill competition 1990, this season she won the World Cup overall the first non-swiss winner since 1984, and the first austrian winner since Annemarie Moser-Pröll in 1979.
Split into simpler sentences: She debuted in the World Cup in 1987, and achieved her first win in a downhill competition 1990. This season she won the World Cup overall the first non-Swiss winner since 1984, and the first Austrian winner since Annemarie Moser-Pröll in 1979.