Iris Smith (Colorado Springs, Colo./Sunkist Kids) will be unable to compete at the Women's World Championships in Sofia, Bulgaria, Nov. 22-25, as she has joined the U.S. Army and started her basic training commitment.    The World Championships of Wrestling were originally set for Sept. 26-29 at Madison Square Garden in New York City, but were postponed due to the terrorist attacks on the United States on Sept. 11. The World Championships were rescheduled by FILA on October 11.    Smith decided to join the U.S. Army prior to the originally scheduled World Championships. When the competition was rescheduled for November, Smith had to fulfill her military commitment.    Smith competes at 165.25 pounds, and won the U.S. Nationals and World Team Trials titles during the 2001 season. She was a member of the 2000 U.S. Women's World Team. Smith is originally from Albany, Ga.    A Special Wrestle-off will be held for the open U.S. World Team position between No. 3 ranked Melani Macari-Montierth (Fremont, Calif./Missouri Valley College) and the winner of the 165.25 pound weight class at the recently completed Sunkist Kids International Open, Jenna Pavlik (Lewes, Del.).    Sandra Bacher (San Jose, Calif./Dave Schultz WC) holds the No. 2 ranking at the weight class, but will be unable to participate due to prior commitments. Macari-Montrieth, a student at Missouri Valley College, did not participate in the Women's World Team Training Camp, and a Wrestle-off became necessary.    The Special Wrestle-off is expected to be held at the U.S. Olympic Training Center in Colorado Springs, Colo., Nov. 10. Specific details about the venue and session times will be announced when available.    Macari-Montierth will compete for the USA at the Women's World Cup in France this week, then return to the United States. Macari-Montierth placed third in the 2001 Women's World Team Trials.    Pavlik is a freshman at Lock Haven Univ., and is a former Cadet World medalist. She was a First Team member of the 2001 TheMat.com/Asics Girls High School All-American Team.    Another U.S. World Team member, Tina George (Colorado Springs, Colo./Sunkist Kids), will also be unable to participate at 123.25 pounds, as she has also joined the U.S. Army and has entered basic training. A Special Wrestle-off for the 123.25-pound position will be held in Gym #9 of Sports Center II at the U.S. Olympic Training Center on Tuesday, Nov. 6, with session times of 10:00 a.m. and 2:00 p.m.