 Nyorai mberi kweiyi ndima - Mehnert akatanga basa rake nekirabhu yekumusha kwake, Borussia Dortmund, uye akafambira mberi kuburikidza nechikwata chekuchengetedza, achisimudzirwa kuchikwata chekutanga chevakwikwidzi veEuropean panguva iyoyo muna 1997. Akaita kutanga kwake mumutambo wechipiri we UEFA Super Cupvachipesana neBarcelona, achitsiva Steffen Freund semunhu anoshandura mumaminitsi makumi maviri, uye akaita zvitatu muBundesliga, uye imwe muChampions League, vachipesana neSparta Prague. 