SEASONAL could clinch the Division A1 crown in a committee room and pitch the Hongkong league climax into chaos for the second successive season, following an unregistered player dispute. The Hongkong Basketball Association could effectively hand Seasonal the title if they rule defending champions Seapower's American, Glenroy Ferguson, was not registered when he played in Sunday's 111-99 league defeat of Seasonal. Seasonal lodged an official complaint and team manager Ng See-yuen said: ''We found out Ferguson wasn't registered with the HKBA 48 hours before the match, so he shouldn't have been eligible to play. ''We are not protesting because we lost the match and we are not against Seapower either. It is a matter of principle that everybody should follow the rules and we are only after justice. ''The ball is now in the association's court, but we expect fair play.'' HKBA sports executive Sam Ho Wai-hing said: ''We received a faxed registration from Seapower on Friday and waited until 7 pm before we closed the office, but Ferguson never showed up.'' League rules stipulate players have to register in person 48 hours before making their debut. ''I was at a meeting on Saturday morning and did not pursue the matter further and perhaps Seapower thought his registration had been approved,'' added Ho. Seapower's manager John Sham Ching-fai said it was up to the association to decide what to do. He would not say when Ferguson arrived in the territory. HKBA chairman Norman Chan Shui-tim said: ''The complaint will be referred to the disciplinary and league committees if any rules have been infringed. I hope the dispute can be settled before the final play-off matches on Saturday.'' Chan added that Seapower face losing the match by default if it is ruled they used an unregistered player. Seasonal, currently top of the table with 15 points and with an outstanding game against second-placed Suntex, would take an unassailable lead if the defeat against Seapower was reversed. Suntex, with 11 points to their credit, would otherwise still be in with a chance of clinching the title if they beat Seapower tonight and Seasonal on Saturday. The controversy comes as an unwelcome reminder of the debacle, also involving Seasonal, that marred the closing stages of last season - when they brought in American imports Barry Young and Larry Koretz after a verbal promise by association officials thatthe usual two-week registration requirement would be waived. Their opponents, the now defunct Great Wall Electronic, objected and Seasonal, after threatening a walk-out, played on without the imports only when HKBA chairman Chan promised to reschedule a later crucial play-off game so the pair would be eligible for that. Other teams were furious, but Seasonal duly ignored the original date for the play-off game, failing to show up. That cost them the league crown when opponents Fukien claimed a walkover, accepted by Chan who admitted making a mistake by having offered to reschedule the game for Seasonal. Chan resigned, only to retract his decision at the insistence of Seasonal manager Ng who, in return, promised not to pull his team out of the Super Commercial Cup. The incident led to an HKBA registration policy review and the 48-hour rule which has precipitated the current unseemly dispute.