Complex sentence: Poulter turned professional in 1996 gaining his first win at the 1999 Open de Côte d'Ivoire on the European Tour's second tier Challenge Tour; he won promotion to the European Tour itself via the qualifying school later that year.
Split into simpler sentences: Poulter turned professional in 1996 gaining his first win at the 1999 Open de Côte d'Ivoire on the European Tour's second tier Challenge Tour. He won promotion to the European Tour itself via the qualifying school later that year.