Sooner duo Ana-Maria Constantinescu and Teona Tsertsvadze fell in the doubles quarterfinals Friday at the ITA National Intercollegiate Indoor Tennis Championships. Constantinescu and Tsertsvadze lost to Stanford's Lindsay Burdette and Hilary Barte Friday in the quarters, 8-3. Burdette and Barte are the tournament's No. 2 seed and are also ranked No. 3 nationally in doubles. Constantinescu also played in the singles consolation round, facing Laura Vallverdu of Miami who is ranked No. 6...