Bloomberg:Â EBay’s StubHub has escalated a long-running fight with Ticketmaster by suing over the Golden State Warriors season ticket policy that it said seeks to sideline resellers. The lawsuit is the latest battle between StubHub, the largest ticket reseller in the U.S., and Ticketmaster, the primary ticket seller for many professional sports teams and concerts. The companies have fought in court and statehouses for almost a decade, lobbying lawmakers over bills that could alter the price restrictions on ticket resales.