Marais has two short spells at near-neighbours the Griffons (2012-’13: 6 appearances). He made his Currie Cup debut during the 2012 Currie Cup First Division against the Falcons, marking the occasion by scoring his first ever senior try.
He signed a deal that would see him play for the Toyota Cheetahs in the 2016 season.
Marais played all 10 games in the 2016 Currie Cup, including the Semi-Final against the Lions in Bloemfontein and in the Home Final against the Blue Bulls. (2016 Currie Cup Champions)
PRO14 debut – 1 September 2017 vs Ulster in Northern Ireland.