Born in Provo, Utah, Nyman raced at Sundance as a junior until making a move to Park City in 1999.

He was a discretionary pick for the 2002 World Junior Championships in Tarvisio, Italy, where he won the slalom and finished second in the combined.

He did not compete regularly on the World Cup until the 2006 season, during which he notched a pair of top-ten finishes and competed in his first Winter Olympics, finishing 19th in downhill, 29th in combined, and 43rd in super G. Nyman made his first World Cup podium in December 2006, placing third in a downhill at the Birds of Prey course at Beaver Creek, Colorado.

Fifteen days later, he won his first World Cup race, a downhill in Val Gardena, Italy.

[2] He injured his right knee (ACL) in late January 2018 at Garmisch and missed the rest of the season, including the 2018 Olympics;[3] he had finished third at the pre-Olympic downhill at Jeongseon two years earlier.