A diminutive striker with an exceptional turn of pace, Addo's ability to score goals and demoralise the opposition has led to him earning the nickname "baby-faced assassin".
[1] During that same season, he scored two late, controversial goals for Hearts of Oak to defeat arch-rivals Asante Kotoko 2–1, in a match that was marred by the worst stadium disaster ever to take place in Africa.
[5] After struggling to establish himself in the Maccabi Tel Aviv first team, Addo was loaned out to Greek Superleague club Ergotelis in January 2005 until the end of the season.
[6] He then moved to Cyprus signing with Cypriot First Division side Enosis Neon Paralimni, but after spending yet another season struggling, he decided to return to Ghana and his first club Hearts of Oak in October 2006.
[11] Addo made his senior debut in July 2000 at the age of 17, also managing to score his first goal against Sierra Leone during the 2002 World Cup CAF qualification final round.