Augsburg maintained the perfect record of Bundesliga clubs in the first round of the German Cup on Sunday but there will not be another giant-killing campaign for last term’s semi-finalists Saarbrücken of the third division. Augsburg came from behind to win 4-1 at fourth division Viktoria Berlin to make it 12 from 12 top flight teams who have played so far to reach the second round. The hosts got a sniff at an upset when Aidan Liu put them ahead in the fourth minute, but Elvis Rexhbecaj in the 33rd, and Samuel Essende, Niklas Dorsch and Phillip Tietz after the break reversed matters in favour …