Complex sentence: There, he immediately won the Dutch Supercup in a 3--1 win over PSV Eindhoven in August, and was also a key element in a side that lost the 2007 national championship on the last matchday, to precisely PSV.
Split into simpler sentences: There, he immediately won the Dutch Supercup in a 3--1 win over PSV Eindhoven in August. He was also a key element in a side that lost the 2007 league on the last matchday, to precisely PSV.