Bayern Munich striker Robert Lewandowski's perfect goal-scoring form this campaign, after netting on Saturday as Bayern Munich beat Union Berlin 2-1.
His second goal in the win saw the Polish striker become the first player to score in the opening nine matches of a Bundesliga season, taking his tally to 13 so far.
The champions took the lead through Benjamin Pavard in the 13th minute, before Lewandowski curled in a beautiful strike in the 53rd minute.
"I always try to do my best, to perform to the best of my ability," Lewandowski said post-match.
"I'm glad we won. I want to help the team with my goals, with my play, with my movements.
"I'm glad about the record of course, but I focus on football and training. Maybe I'll think about it more at the end of the season."
His manager also heaped praise on him and further challenged him to go a step further and perform even better.
"Robert Lewandowski has set a Bundesliga record. That's nice. I'm glad that we all got out of the game healthy today. Because you know what I mean [because of the many injured]."
Kovac added: "I know we can still do better. If you look at the games from the last few weeks, it's always close games where we only are one goal in front at the end.
The win saw Bayern ascend to the top of the Bundesliga standings on 19 points, one ahead of fierce rivals Borussia Dortmund.