Pedzisa mutsara unotevera:
1973 All-Africa Games muLagos, Nwankpa akapinda mumakwikwi e light-welterweight. Akakunda menduru yegoridhe, achikunda Issake Dabore weNiger mumutambo wokupedzisira. Akakundawo menduru yegoridhe muchikamu chechiedza-welterweight pa1974 British Commonwealth Games, achikunda Anthony Martey weGhana mumakwikwi ekupedzisira.