Thomas Tuchel voiced his frustration with Borussia Dortmund's inability to put the game to bed after they were held to a 1-1 draw by Mainz.
Marco Reus put Dortmund into an early lead after some good work from Andre Schurrle and they created a number of chances to double the advantage.
They failed to add a second goal, though, and Danny Latza eventually restored parity with seven minutes left on the clock.
"It was a decent away game from our side in the opening 45 minutes," Tuchel stated at a news conference.
"But we were unfortunately not able to make the most of our dominance and score a second. It is annoying. We failed to double our lead.
"We did not give away any chances of note until the equaliser. I think we were very alert in defence and showed the right attitude. We dealt well with their counterattacks.
"We feel that we should have had a few more points now. It will be difficult."
Dortmund remain fourth in the Bundesliga table following this weekend's results, trailing table-topping Bayern Munich by 14 points.
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