In addition he competed in three World Track and Field Championships representing the United States, 1991 Tokyo, Japan, 1993 Stuttgart, Germany, and 1995 Goteborg, Sweden.
Buncic had the world's longest Discus Throw for the 1991 season on April 4, 1991, of 227'7" at Fresno, California.
Buncic competed for the University of Kentucky where he was a multiple SEC Champion, record holder, and All-American in the shot put and discus throw.
He holds a Masters of Science degree in Molecular Biology from San Jose State University.
Buncic is now a human physiology teacher at Wilcox High School in Santa Clara, California.