Sadie started off his career playing for Western Province in 2010, however stiff competition from Springboks' Jean de Villiers, Jaque Fourie and Juan de Jongh in his chosen position meant that he moved.
His time in Pretoria was not a happy one and he only managed 10 Super Rugby appearances and 3 games in the Currie Cup.
He joined the Cheetahs after the 2012 Currie Cup Premier Division[3] and made an instant impact in Bloemfontein scoring 5 tries during the 2013 Super Rugby season.
[2] After the 2015 Super Rugby season, he joined French Top 14 side Agen on a two-year deal.
[4] Sadie represented South Africa U20 at the 2009 IRB Junior World Championship in Japan scoring 1 try in 4 matches.