Principal dancer
In 1986, Helgi Tomasson invited Pech to join the San Francisco Ballet, and he was promoted to Principal dancer in 1990. There, he was choreographed by James Kudelka, David Bintley, Val Caniparoli, Mr. Tomasson, and Lisa deRibere, as well performing principal roles in ballets by Balanchine and others. In 1991, Pech was the subject of a KQED-TV special entitled "Blue Lair", a ballet about his victory over cancer. It was awarded a 1991 Emmy Award for Best Choreography. In 1993, he became co-founder and Artistic Director of the Diablo Ballet, but resigned in 1995.