It took until the 62nd minute for both teams to register a shot on target as they cancelled each other out, before City were given a golden opportunity when Virgil van Dijk was adjudged to have upended Leroy Sane in the penalty area.
"But during the training sessions I see (Mahrez) taking the penalties and it gives me a lot of confidence".
"Now the players go off and play the Nations League which is the most senseless competition in the world of football", said Klopp, who urged the soccer authorities to look at the issue of players being overused.
Manchester City had three big calls for penalties yesterday and Martin Atkinson got them all right.
"I asked him 'big one?' and he said 'I don't think so, but big enough that I go off'".
Pep Guardiola is the world’s best manager, says Jurgen Klopp
We defend so well as a team; it starts from the front with the work-rate they put in. That was really important to see it agains, to adjust a few things.
The summer signing from AS Monaco has made three appearances for the club so far, most recently as a substitute during last week's Champions League tie against Napoli. It was the Algerian international's fourth miss from the spot in his last six.
Going by how the two sides have been at top form, many would have thought the game would be filled with goals from different angles. "In the training session he shoots flawless penalties, and ok this sometimes happens so at the end it is what it is".
"It was not smart from me personally and hopefully it will never happen again", he said. Pep Guardiola's team will play Burnley after the global break and will then make a trip to Ukraine to play Shakhtar Donetsk for their next Champions League match.
"I think it is not about these games, it is all about the other games, the hard games which we have against mid-table and lower teams", the centre-half said. It showed we can do both - have the ball and be very strong as well.
"But it is tough week in, week out, and playing with a little injury is not easy".