[1] He made his first class debut for the Bulls in their opening match of the 2006 Super 14 season, coming on as a last-minute replacement in their 30–18 victory against the Cheetahs in Bloemfontein.

[4] Despite having less than ten minutes of Super Rugby experience and five Vodacom Cup matches to his name, Ralepelle was included in the Springboks squad for the 2006 Tri Nations Series.

Head coach Jake White named Ralepelle on the bench for the second test against Australia in Sydney, but he failed to make an appearance.

[11] He won back his place in the South Africa squad, being included in their tour of Great Britain in November 2008, making one appearance in their 42–6 victory against England.

[18] This didn't affect his national team prospects, however, as he featured in the 2010 mid-year rugby union internationals, playing in matches against Wales, France and Italy.

He was once again selected in the South Africa squad that toured Great Britain and Ireland during the 2010 end-of-year rugby union internationals.

However, on 15 November 2010, Ralepelle (along with winger Bjorn Basson) was suspended and sent back to South Africa following a positive drugs test after their match against Ireland,[19] with traces of banned substance methylhexanamine found in his system.

After an investigation, the South African Rugby Union found both players innocent of all charges and issued a public apology to them.

Both players were given diet supplement Anabolic Nitro Nitric Oxide Extreme Energy Surge by team officials.

[24] He did return to action at the end of the year, making three appearances for the Blue Bulls in the 2012 Currie Cup Premier Division before being an unused player for South Africa's end-of-year tour.

[27] In June 2013, the Bulls announced that Ralepelle would join French Top 14 side Toulouse after the 2013 Currie Cup Premier Division season, but he failed to feature in the competition.

[29] The hearing into this positive drugs test was set for mid-March 2015, but Ralepelle had his contract with Toulouse cancelled and returned to South Africa.