He continued rowing as a college student at Brown University where he studied mechanical engineering.

He trained with Scott Roop, his coach from Brown, and won the World Championships in the Men's Heavyweight 1x in September 1997.

In 1998 Koven won the World Cup in Munich and the Diamond Challenge Sculls at the Henley Royal Regatta.

[1] At the World Championships in Cologne that summer he had an equipment malfunction in the semifinals; he finished 8th in that regatta.

In the fall of 2010, Koven came out of retirement and began training with the U.S national team in Chula Vista, California.