Career
Sunday started his career playing for local club Kumasi Asante Kotoko, of which he became the captain. In 1975, Sunday moved to Werder Bremen in the German Bundesliga, where in two seasons he barely had any playing time, appearing in only one league match against Rot-Weiß Essen in December 1976. International play
The Black Stars lost the final to DR Congo.
At the 1970 Nations Cup, there was a rematch of the semifinal from two years before.
Ghana defeated the Ivorians again 2-1, with Sunday scoring the opening goal. However, they lost in the final again, that time to hosts Sudan.
The 1970 final was Sunday"s last Nations Cup match, as Ghana failed to qualify for the 1972, 1974, and 1976 continental tournaments. In 1971, while playing for Kotoko, Sunday was named African Football player of the Year (Ballon d"Or) by French magazine France Football, being the first of three Ghanaian football players that have earned such distinction to date.
Ghana then qualified for the 1972 Olympic tournament in Munich, and Sunday was part of the Olympic squad.
As a coach, he has managed his former club Asante Kotoko, leading them to their second African Cup of Champions victory in 1983. He also managed Abuakwa Susubiribi and Ashanti Goldfieds of Ghana, Football Club 105 of Gabon and Côte d"Ivoire club Africa Sports of Abidjan, whom he also led to the continental title in 1992. and now coached the MTN Sports Academy.