Although the Kings have now lost all seven games in the semi-final pool, they produced one of their most creditable performances despite having no Americans or their tallest player, the injured 6ft 10in international Martin Henlan.
However, Tracy Pearson, who was released with his fellow American Lorenzo Duncan in a cost-cutting exercise before Christmas, is expected to rejoin the team today.
Karl Brown was Guildford's leading scorer with 18 points, supported by 15 from Adrian Cummings and 13 from Ronnie Baker. Guildford, who trailed 52-28 at the interval, outscored Treviso 43-41 in the second half and out-rebounded the Italian league runners-up 43-38.
The Italian international guard, Maurizio Ragazzi, led Treviso's scorers with 25 points as Guildford also had the satisfaction of keeping the home club's pounds 6m signing, Riccardo Pittis, off the top of the scoresheet.