Career
His regular position is a flanker, but he has occasionally played as a lock or number eight. Youth
Playing his schoolboy rugby for Standerton High School, Kruger was included in several youth tournaments for his provincial side, the Mpumalanga Pumas, playing at the 2004 Under-16 Grant Khomo Week, at the 2005 Under-18 Academy Week and the 2006 Under-18 Craven Week tournaments. At the start of 2007, Kruger joined Potchefstroom-based side the Leopards.
He played for the Leopards U19 team in the 2007 Under-19 Provincial Championship and for the Leopards U21 team in the 2008 Under-21 Provincial Championship.
Golden Lions
In 2009, Kruger moved to Johannesburg to join the Golden Lions. He made his first class debut for them during the 2009 Vodacom Cup competition, starting their match in Potchefstroom against former side the Leopards.
Six days later, he started their match against the Blue Bulls in Pretoria and scored the opening try of the match, but could not prevent the Golden Lions suffering a 20–19 defeat. With just the two first class matches behind his name, Kruger was drafted into the Lions Super 14 squad for the 2009 Super 14 season and included in their touring squad that travelled to Australasia.
He made his Super Rugby debut on New Zealand soil in a match against the Blues in Auckland, coming off the bench on the hour mark.
Despite getting sin-binned in their next match, a 31–20 victory against the Reds in Brisbane, Kruger was promoted to the starting line-up for the first time the following week against the Force in Perth. Upon their return to South Africa, Kruger made a further two starts and one appearance off the bench. Leopards
He was once again called up to the Lions Super Rugby side for their 2015 Super Rugby season.
He played off the bench for the Lions in their first match of the season in a 8–22 loss to the Hurricanes to make his first appearance in the competition after a four-season absence.
He featured in a total of twelve matches during the 2015 Currie Cup qualification rounds and First Division proper and scored two tries for the side.