Complex sentence: He scored one goal in eight appearances in the three World Cups in which he competed, being this goal the second goal in Mexico's victory against Belgium in Mexico 1986 and also failed to score a penalty kick against Paraguay in the same tournament.
Split into simpler sentences: He scored one goal in eight appearances in the three World Cups in which he competed, this goal being the second goal in Mexico's victory against Belgium in Mexico 1986. He also failed to score a penalty kick against Paraguay in the same tournament.