Known for his aggressive scrumming, the loosehead prop man made his debut for UWC in the 2012 Varsity Shield. Moving to the Lions for the U21 Currie Cup in 2012, Martinus then made his Vodacom Cup debut for the province in 2013 and went on to represent the Baby Boks at the IRB Junior World Championship in the same year.
After the Junior World Championship Martinus signed for the Griquas where he has become a vital cog in the side for the last four years.
|2016 - present|
|South Africa U20's
|2013 - 2014|