 Complete the following phrase:  Bruintjies took up athletics as a grade 1 schoolboy. In 2013, he was the South African under-23 champion in the 100 metres, defeating Akani Simbine in 10.44; at the national senior championships, he placed second behind Simon Magakwe in 10.58. He represented South Africa at the 2013 Summer Universiade in the 4 × 100 metres relay; the South African team placed seventh. In 2014, Bruintjies improved his personal best to 10.17 1.8 ms and ran the opening leg for South Africas relay team at the Commonwealth Games in Glasgow; South Africa placed fourth in a national record 38.35. Bruintjies also competed in the 