|Men's ski jumping|
|1994 Lillehammer||Normal hill – K90|
His biggest success at the 1994 Winter Olympics in Lillehammer where he earned a silver medal in the Individual Normal Hill. Ottesen also finished 4th at the 1995 Nordic skiing World Championships in the Individual Large Hill.
After retiring, he became a coach. He was the ski jumping coach for the Nordic combined teams of Norway and then the United States, and later became the head coach for the United States.
In the 1993/94 Four Hills Tournament, Ottesen played a notorious role in helping his compatriot Espen Bredesen beat German Jens Weißflog. Weißflog was protecting an 8-point lead before the last jump, and the jumping order was Bredesen – Ottesen – Weißflog. After Bredesen's jump, Ottesen illegally delayed his jump so long until the wind conditions had significantly worsened. Weißflog lost 20 points on his last jump, lost the tourney and bitterly complained of foul play afterwards.
|World's longest ski jump
22 March 1997 – 19 March 1999