He attended alongside future Springbok team-mates Fourie du Preez and Wynand Olivier, professional rugby players Derick Kuün, Jacques-Louis Potgieter, Gerhard van den Heever, Adriaan Fondse and cricketers Bachelor of Arts de Villiers, Heino Kuhn and Faf du Plessis. After school, he completed his first year in Bachelor of Science
He usually plays as a Number 8, but can also play as a flank. Between 2005 and 2015, he spent the majority of his career playing Super for the Bulls and domestic South African rugby for the Blue Bulls. He also represented South Africa between 2006 and 2013.
Construction Management at the University of Pretoria.
He made his first class debut for the Blue Bulls in 2005 in a match against Griquas. He made his Super 12 debut against the Brumbies, becoming the youngest player ever to represent the Bulls.
However, he picked up an injury in this match and reverted to the Blue Bulls U21 side, where he scored nine tries in six games in the 2005 Under-21 Provincial Championship. After representing the South African Under-21 side at the 2006 Under 21 World Championship in France, Spies made his Springbok debut their 49–0 defeat at the hands of Australia in the 2006 Tri Nations Series.
He was retained for the home leg of the tournament and turned in two "Manitoba-of-the-Match" performances, in their wins over the New Zealand in Rustenburg and Australia in Durban.
He was injured in match against Ireland on the Springboks" end of year tour, which ruled him out for the rest of the tour, as well as much of the 2007 Super 14 season, but he did make his comeback for the Bulls in their 49–12 victory over southern rivals the Stormers. On 21 July 2007, Spies was selected was in Jake White"s Springbok squad for the 2007 World Cup to be played in France in September, but was forced to withdraw from the squad nine days later after blood clots were found in his lungs. After getting a second opinion, it was stated that Spies could return to the World Cup squad if a third opinion was positive.
However, the third diagnosis confirmed the original one and Spies withdrew from the squad.
He returned to the Springboks" team for the 2008 June internationals against Wales. In 2009, his performances in the Super 14 earned him a selection for the Springboks to play against the British & Irish Lions during their tour to South Africa.
He was also selected for South Africa"s end-of-year tour, but injured his finger and was ruled out. As of 2009, he could power clean 135 kg, dead-lift 240 kg, bench-press 165 kg and do pull-ups with a 50 kg weight between his legs.
He could jump 1.4m onto a raised platform and had a body-fat percentage of 6.5.