2. Bundesliga: Relegated Heidenheim beat promoted Osnabrck in seven-goal thrillerHeidenheim started their 2. Bundesliga campaign with a 4-3 win over Osnabrck. Frank Schmidts side led 3-2 at the end of the first-half after Osnabrck cancelled out their first two strikes.New signing Marcel Costly assisted Budu Zivzivadzes opener in the tenth minute. The Georgian striker started the season with the form he had at the closing stage of their Bundesliga campaign as his second goal was nullified for an offside.The 3. Liga champions then leveled the score from a set-piece opportunity in the midpoint of the first-half. Center-back Niklas Wiemann headed home after Konrad Fabers initial delivery from a corner-kick parried away by Heidenheims defense.It was the turn of Osnabrck to fail to clear their lines when Costly restored Heidenheims lead five minutes later. Another five minutes later, Faber produced his second assist of the game when David Kopacz caught everyone by surprise with a stunning strike from outside the box.However, the newcomers were behind once again as Jonas Fhrenbachs corner-kick was converted by Jan Schppner in the injury-time of the first-half. The next goal also came from another corner-kick, but it didnt arrive until the 89th minute.Heidenheim led by two goals for the first time as debutant Costly registered his third direct goal involvement with a perfect delivery to Marvin Pieringer. A couple of minutes later, Marnon Busch was penalized for a handball from Robin Meiners free-kick. Osnabrcks last season top-scorer netted the seventh and last goal of the game from the resulting spot.Osnabrck pushed for yet another equalizer in injury-time, but the hosts held on to grab all three points in the opening matchday. Heidenheim will face Hertha away from home next week as both teams will hope to maintain their perfect start to the season. Osnabrck host Magdeburg, who lost 6-1 at home to Eintracht Braunschweig.