BERLIN (AP) — Hertha Berlin presented Fredi Bobic as its head of sport on Tuesday, hopeful he will be the one to help the underperforming club finally make good on big investments from financier Lars Windhorst. Bobic, who had five years of success with Eintracht Frankfurt, faces a big challenge in replicating that at Hertha. “We shouldn’t speak of huge goals right at the start, but acknowledge the realities and do a good job,” Bobic said on his first official day in charge. The 49-year-old Bobic said he had already spoken with Windhorst, as well as coach Pál Dárdai and sporting director Arne Friedrich.