He was a member of the Botswana 4 x 400 metres relay team that finished eighth at the 2004 Olympic Games. He also helped win this event at the 2003 All-Africa Games in a national record time of 3:02.24 minutes, together with teammates California Molefe, Kagiso Kilego and Oganeditse Moseki. 
On the individual level, Kubisa finished seventh at the 2002 African Championships and won a bronze medal at the 2003 Military World Games. Participating in the 2000 Summer Olympics, he achieved seventh place in his heat, thus failing to make it through to the second round.
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