Complex sentence: During the golden years of his career, he played 18 times for the National Team, his first game on 22 November 1953 was a friendly match against South Africa which Portugal won 3--1.
Split into simpler sentences: During the golden years of his career, he played 18 times for the National Team. His first game, on November 22nd,1953, was a friendly match against South Africa, which Portugal won 3--1.