At youth level, Lewis played for Western Province at the 2000 Craven Week tournament and for Boland Cavaliers at the 2001 Craven Week tournament. This also led to his inclusion in the South African Schools team in 2001. He returned to Western Province to play for them at Under-19 level in 2002 and was subsequently called into the South African Under-19 squad in the same year.
In 2003, Lewis moved to Pretoria to join the Blue Bulls and played for them at Under-20 level. Despite his inclusion in their senior squad for the 2003 Vodacom Cup, he did not make a first class appearances.
Lewis returned to the Boland Cavaliers in 2005 and played for them in the Provincial Amateur competition. He was named in the squad for the 2005 Vodacom Cup competition without appearing. He finally made his senior debut in the 2006 Vodacom Cup, making a substitute appearance against his former team the Blue Bulls.[2]
It wasn't until the 2007 Currie Cup Premier Division competition that he established himself in the first team. Five substitute appearances in that competition were followed up by four starts and he has been a first team regular ever since.
In 2012, Lewis was also included in the Stormers squad for the 2012 Super Rugby season, but he failed to make an appearance for them.[3]
In addition to his S.A. Schools and S.A.Under-19 representation, he was also included in a South African Barbarians (South) team that faced England during the 2012 mid-year rugby test series.[4]
