Initially he found it difficult to find a swimming club that would coach him due to his intellectual disability.

Eventually he joined ZV Haerlem, where he met trainer Wim Ten Wolde.

In December 2011, at the Open Dutch Championships in Eindhoven, he qualified for the 2012 Summer Paralympics in London.

At London, on 31 August, he won the gold medal in the 100m backstroke setting a world record time.

When Evers took the gold in the backstroke he became the first athlete with an intellectual disability to win a medal since Sydney 2000.