Complex sentence: Reinhard Libuda scored in extra-time, and with no further goals, Dortmund won the match 2--1 to win the Cup Winners' Cup and become the first German team to win a European trophy.
Split into simpler sentences: Reinhard Libuda scored in extra-time and with no further goals Dortmund won the match 2--1. Dortmund became the first German team to win the Cup Winners' Cup and the first German team to win a European trophy.