Muller made his debut for the
Springboks against
Scotland in 2006 at
ABSA Stadium. He would then earn a further 5 caps, 4 of which being as a member of the starting 15. Muller made his provincial debut in 2001 and his
Super 14 debut the following year. Muller was selected into the Springboks squad for the 2007 home tests and the
2007 Tri Nations on the basis of a strong
2007 Super 14 performance.
2007 Tri Nations During the latter part of the competition, Springbok coach
Jake White decided to rest his top players from touring
Australia and
New Zealand. White stated that the players that were taken on this tour would be playing for places in the Springboks
2007 Rugby World Cup squad. Muller was included in the squad chosen to tour. He was named
captain in the match against the
All Blacks on 14 July 2007 after original tour captain
Bob Skinstad was injured in the match against the
Wallabies. Muller performed well in both matches. He was then rewarded with a place in the squad for the
2007 Rugby World Cup. == Ulster Rugby==