He started his career playing for the and represented them at Under–19, Under–21 and 'A' team level. At the end of 2001, after his second year representing the Under–19 team, he was included in the pre-season training squad for the 2002 Vodacom Cup, following it up with appearances in the 2003 and 2004 seasons. He was also part of the Currie Cup training squad in 2004, playing all the warm-up games.
Griffons
In 2005, he joined Welkom-based side for one year, being involved in their Vodacom Cup and Currie Cup campaigns.
Return to Lions
He returned to the Golden Lions at the end of 2005. He was included in the squad prior to the 2006 Super 14 season before getting injured. He subsequently made three appearances in the 2006 Vodacom Cup side before breaking into Currie Cup side for the first time, making his Currie Cup debut for the Golden Lions in their match against. and playing in all fourteen matches that season. In 2007, he was also included in the squad for the 2007 Super 14 season and made his Super Rugby debut in their second match of the season in an 11–6 victory over New Zealand team the. and remained a first team regular over the next two seasons. He was also included in a Springbok training squad in 2007. He wasn't included in the squad for 2009 Super 14, instead captaining the Vodacom Cup team in the 2009 Vodacom Cup season.
In 2009, it was announced that he joined English Premiership side Saracens, where he played for two seasons.
Stormers
Shortly before his Saracens contract was due to end, he joined the on loan for part of the 2011 Super Rugby season as a replacement for injured Tiaan Liebenberg. He made two substitute appearances for them, as well as two appearances for their Vodacom Cup side, in the 2011 Vodacom Cup.
In addition, Reynecke also played for a World XV against an Asia-Pacific Barbarians side in the 2011 Chartis Cup in Hong Kong in aid of the 2011 Tōhoku earthquake and tsunami disaster. He also played for the South African Barbarians in 2013 against former side Saracens in 2013. After pro rugby, Reynecke turned his focus to MMA and trained at the WWE Performance Center in Orlando, FL. In 2018 Reynecke suffered a series of near-death experiences, namely an ischemic stroke, leaving him with the permanent disability Aphasia. Fortunately, he recovered and in 2020 became the South Africa IMMAF light-heavyweight champion. Reynecke is now a stroke ambassador, raising awareness and supporting survivors.
