Croatia striker Ivica Olic struck twice in three minutes as SV Hamburg came from behind to beat second-division Ingolstadt 3-1 in the first round of the German Cup on Saturday, dpa reported.
Elsewhere Bundesliga clubs had little trouble against amateur league sides, with the first round so far passing off without a giant-killing act.
Werder Bremen and Borussia Moenchengladbach enjoyed goal sprees against lower-league opponents, while last season's losing finalists Borussia Dortmund and local rivals Schalke - both with new coaches - were among the Bundesliga sides to advance.
Bremen ran riot in a 9-3 victory at Eintracht Nordhorn while newly-promoted Bundesliga side Moenchengladbach demolished Fichte Bielefeld 8-1.
In Ingolstadt, the second-division side went into half-time a goal up against Hamburg thanks to a 33rd-minute header from Ersin Demir.
But Hamburg turned the came round after the break when Olic scored from close range in the 51st minute after Paulo Guerrero struck the post, and pounced again three minutes later from a neat pass from Piotr Trochowski.
Guerrero ended all resistance with a third for the visitors in stoppage time.
Borussia Dortmund enjoyed a 3-1 win at local fourth-division rivals Rot-Weiss Essen in the first competitive game in charge for coach Juergen Klopp.
Tamas Hajnal (14), Florian Kringe (60) and Nelson Valdez (70) grabbed the goals, with Stefan Lorenz (18) on target for Essen.
Schalke's new Dutch coach Fred Rutten saw his side in complete control for a 3-0 win at fifth-division Homburg.
New signing Jefferson Farfan opened the scoring just before half-time before goals from substitute Halil Altintop in the 55th minute and Kevin Kuranyi seven minutes later.
Markus Rosenberg bagged four goals and fellow striker Hugo Almeida three, with Boubacar Sanogo and Jurica Vranjes also on target as Bremen ran out 9-3 winners at fifth-division Nordhorn.
In Bielefeld, seventh-division outfit Fichte were no match for Moenchengladbach who scored seven goals in the first half before coasting to an 8-1 victory, with Marko Marin scoring three.
Top-flight side Hanover coasted into the next round with a 5-0 win at fourth-division Halle in a match interrupted for 10 minutes after crowd disturbances shortly before the end.
Also easing through were Eintracht Frankfurt who were 3-0 winners at fourth-division Pfullendorf, thanks to a brace from Brazilian defender Chris and one from Nikos Liberopoulous.
Visiting Cottbus joined the Bundesliga contingent to progress with a 3-0 win at fifth-division Berlin side Tennis Borussia, with Dimitar Rangelov scoring in each half and Branko Jelic also on target.
Other Bundesliga clubs to go through after matches on Thursday and Friday are Cologne, Hertha Berlin and Bochum.
Cup holders Bayern Munich enter the fray with a visit to third-division Rot-Weiss Erfurt on Sunday when the remaining 12 matches of the round are being played.