Okezie was part of the American 4 × 400 m relay team that won a gold medal at the 2012 World Junior Championships in Athletics in Barcelona.

[4] He represented Nigeria at the 2018 Commonwealth Games and reached the semifinals of the 400 m. He also ran the anchor leg for the country in the 4 x 400 metres relay heats.

He later anchored the Nigerian 4 x 400 m relay team to a bronze medal behind Kenya and South Africa.

Okezie was also a member of the African quartet that placed second in the mixed 4 x 400 m relay at the 2018 IAAF Continental Cup.

In 2019, he won the bronze medal in the men's 4 × 400 metres relay at the 2019 African Games held in Rabat, Morocco.