Chris Sarandon guest stars as Martus, an adroit swindler who poses a threat to DS9's resident rogue Quark. Possessing two qualities that Quark lacks -- looks and charm -- Martus sets up a competing bar. As if the resulting drop in business wasn't bad enough, Quark is further incensed by Martus' seemingly endless streak of good luck, until the inevitably surprising denouement. First telecast January 1, 1994, "Rivals" was scripted by Joe Menosky from a story by Jim Trombetta and Michael Piller. ~ Hal Erickson, All Movie Guide