Kelvin is a solid defensive back. Very hard to get around, cover a lot of ground and has a very good core physique and uses it well as one of his strengths. Kelvin also likes to contribute offensively and join the rush when the opportunities arise. 

He has a similar playing style to Hans Sarpei. 

Oppong has worked several years in grassroots football development primarily in Kumasi and Accra. His understanding of how grassroots and youth football talents can be shaped into elite player is immense.