Katie Ledecky of the United States celebrates after winning the women’s 1,500-meter freestyle final at the FINA World Championships in Budapest, Hungary, Monday. U.S. swimmers have won seven gold medals so far. PETR DAVID JOSEK/AP
By Ciaran Fahey AP Sports Writer BUDAPEST, Hungary — Italy’s Thomas Ceccon set a world record in the men’s 100 backstroke and Katie Ledecky claimed…