(part of the guests of La Salle's team manager) ganging up on a hapless Letran high school sophomore student for a full minute before police could intervene. But for the mauled student, none was picked up (by the police). Almost simultaneously, the La Salle bench suddenly stood up, the players hunched and protecting their heads with towels and jackets against various missiles pelted on them. The "guests" of De La Salle's team manager were also present during that time when La Salle was able to win over Letran on August 6. Should La Salle win on August 16, it still has to face San Beda (the other qualifier) and win to clinch the round championship; a victory by Letran over La Salle gives it the first round flag. Cojuangco never explained why his "guests" just happened to be positioned in the Letran side of the Coliseum. La Salle for its part, claims that the five men who beat up the Letran student were La Salle students, and both teams went immediately to their respective dugouts. A large number of spectators were hurt, and a great portion of the coliseum was damaged. The game was called off by the NCAA and ordered a replay behind closed doors, but the BAP ordered the remainder of the season to be canceled. La Salle then announced on a press conference in September 1981 that they will withdraw from the NCAA effective at the end of the 1980–81 season. The BAP had its findings released that the rumble was started by Letran students thus giving Letran a one-year layoff in the NCAA. Letran was immediately reinstated back in 1981. Recent rivalries After the former members transferred to the UAAP, new rivalries were formed and the NCAA slowly revived its former glory. Letran–San Sebastian After both Ateneo and La Salle left, San Sebastian (frequently shortened to "Baste") strengthened their basketball program. The recruitment of Paul Alvarez by San Sebastian and Samboy Lim by Letran provided several close games in the 1980s which led to the birth of the rivalry. In the 1980s, Letranites were notorious for yelling profanities at the San Sebastian players, and on one occasion, led to a rumble at Vito Cruz Avenue when at the last second, a power interruption occurred, causing confusion on what team won the championship. The rumbles between the two schools have become more frequent which solidified the intense