[2] At the 2004 Olympics, he was a member of South Africa's Men's 4×100 m freestyle relay that won the event in a world record.

Three of the team were a part of the relay that broke the record and won gold at the 2006 Commonwealth Games.

Lyndon also competed at the 2008 Beijing Olympic Games, where he set the African record in the 100m freestyle at 48.00, earning a sixth place in the finals.

He attended the University of Arizona,[4] where he competed at the NCAA level for his four years of eligibility under the tutelage of former-Olympian sprint coach, Rick DeMont.

While at UA, Lyndon completed his Bsc Accounting degree and now lives in South Africa.