* The Baltimore 13-and-under AAU team has won its first three games in the national tournament in Roanoke, Va. Baltimore defeated Missouri, 76-58, Charlotte, N.C., 56-41, and Oakland, Calif., 70-54. Tommy Polley and Daniel Schick have been the leading scorers at 17 and 16 per game, respectively.
* Martina Navratilova and her former companion, Judy Nelson, watched in court the videotape that recorded their signing of a cohabitation agreement in 1986. Nelson is suing the tennis star for half of the assets accumulated during their seven-year relationship, which Navratilova broke off earlier this year. The nine-time Wimbledon singles champion gave daylong depositions in the case Tuesday and yesterday.