He competed in four consecutive Olympic Games from 1996 to 2008, and won a mixed doubles bronze medal in 2004 partnered with Mette Schjoldager.

In men's doubles, Eriksen and his partner Martin Lundgaard Hansen had a bye in the first round and defeated Howard Bach and Kevin Han of the United States in the second.

They lost the semifinal to Lee Dong-soo and Yoo Yong-sung of Korea 9-15, 15-5, 15-3 and the bronze medal match against Eng Hian and Flandy Limpele of Indonesia 15-13, 15-7 to finish fourth place.

They defeated Svetoslav Stoyanov and Victoria Wright of France in the first round and Kim Yong-hyun and Lee Hyo-jung of Korea in the second.

In the quarterfinals, Eriksen and Schjoldager beat Nova Widianto and Vita Marissa of Indonesia 15-12, 15-8 to advance to the semifinals.