Due to the change in women's international weight classes, and an adjustment suggested by U.S. college coaches, there are now eight weight classes under consideration for TheMat.com U.S. Women's college rankings, released on January 21, 2002. Previous rankings used the previous six international weight classes.    FILA, the international wrestling federation, has changed the women's weight classes for the Senior level, starting on January 1st. The new weight classes will be 48 kg (105.5 lbs.), 51 kg (112 lbs.). 55 kg (121 lbs.), 59 kg (130 lbs.), 63 kg (138.5 lbs.), 67 kg (147.5 lbs.), 72 kg (158.5 lbs.). U.S. college coaches also agreed to add an eighth weight class, 77 kg (169.5 lbs.), which is a weight division used in Canadian colleges.    All six of the top-ranked wrestlers from the December rankings are still in No. 1 positions, even though their weight classes have changed.    These No. 1 ranked individuals who have retained the top ranking are Clarissa Chun, a junior at Missouri Valley (105.5), Patricia Miranda, a senior at Stanford (112), Erin Tomeo, a freshman at Lock Haven (130), Sara McMann, a senior at Lock Haven (138.5), Toccara Montgomery, a freshman at Cumberland College (147.5) and Jenna Pavlik, a freshman at Lock Haven (169.5).    The new No. 1 ranked individuals in the rankings, with the expansion to eight weight categories, are   Jessica Shirley, a freshman at Cumberland College (121) and Samantha Branka, a junior at UM-Morris (158.5).    U.S. coaches have agreed to use these eight weight classes for dual meet and tournament competition throughout the rest of this year's competition season.    In the team rankings, Missouri Valley College remains at No. 1. The Vikings participated in a series of dual meets in Oregon in January, and also had a strong team effort at the Guelph Open in Canada this month.    Moving up to the No. 2 ranking is the Univ. of Minnesota-Morris, which won the team title at the Gord Garvie Memorial Festival in Canada in early December, with four individual champions.    The next teams in the rankings are No. 3 Lock Haven, No. 4. Pacific, No. 5 Cumberland College and No. 6 Neosho County, All of these teams were involved in competitions in the last month.    Holding their rankings are No. 7 American International College and No. 8 Menlo College. Moving up to the No. 9 position is Messiah College of Pennsylvania, followed by No. 10 the Univ. of Hawaii.    Complete individual and team rankings are posted on TheMat.com, in the rankings section.    TheMat.com U.S. College Women's Wrestling rankings will be published monthly on the following dates: Oct. 20, Nov. 20, Dec. 20, Jan. 20, Feb. 20, March 20, April 20, May 20.    Teams who are considered for ranking include both college varsity programs and college-affiliated club programs.    Athletes who are considered for ranking are eligible full-time college students, and are members of their college women's varsity or club program, or a member of their college men's wrestling team.     TheMat.com has created a composite schedule for women's college wrestling, which includes events from the U.S. and Canadian programs. Results from these events will be posted on a regular basis throughout the season.    Media outlets may reproduce these rankings only if they identify them as TheMat.com U.S. Women's Wrestling College Rankings