SURPRISE packages Suntex upset the form book again last night with a 100-85 demolition of previously unbeaten Seasonal in a Hongkong Division A1 match at MacPherson Stadium, Mongkok. The win completed unfancied Suntex's regular-season round of matches and leapfrogged them over Seasonal into second place in the table - at least for the time being. Already assured of finishing in the key top six play-off spots, Suntex have 10 points from their allotted seven games - the same total as champions and leaders Seapower who have played a game less. Seasonal are joint-third with Fukien, on eight points from just five games. Those four teams are all in contention for the regular-season title. Last night Suntex, who had defeated holders Seapower but lost to Frankwell and Fukien in earlier games, overcame a bold second-half fightback by Seasonal. At the outset, Seasonal looked jaded despite not having had a game for almost a month. Team manager Ng See-yuen blamed the defeat on a tough training session the previous night. ''We made the mistake of over training the boys on Monday,'' said Ng, adding: ''This is one of our worst games for a long long time and there's no excuse for it.'' With Scott Patterson doing a tremendous job of checking imported American centre Dave Willard, Suntex prevented Seasonal from scoring a single point in the opening five minutes by which time they had established a crucial 15-point advantage, basis for a44-36 interval lead. But Seasonal hauled themselves back into the frame and narrowed the deficit to only two points by the mid-point of the 20-minute second period. Then Suntex recovered their composure and pulled away again, man of the match Patterson leading the scoring with 27 points. Seasonal's next game is against Seapower on April 19 followed by another crunch match with Fukien on April 27. With regular season positions worth a head start under the play-off handicapping system those matches are sure to be battles royal. In the curtain raiser to last night's double header, Division A1 Fukien crushed Tsuen Wan of Division A 134-53 in the Senior Shield competition after leading 59-24 at half-time.