|Track and field (athletics)|
|Competitor for South Africa|
|Silver||2012 London||Men's 100m T38|
|Bronze||2012 London||Men's long jump F38|
|IPC World Championships|
|Silver||2013 Lyon||Men's 100m - T38|
|Silver||2013 Lyon||Men's 200m - T38|
Buis is a student at Global University in Cape Town, RSA, in Religious and Theological Studies, and trains at Maties Helderberg Disabled Sports Club in Stellenbosch. He competed at the 2012 Paralympic Games, where he won a Bronze Medal in the men's long jump with a world record time for his class of 6.48 metres. He also won a Silver Medal in the Men's 100m for his class.