"That's criminal to be the wrong side of the attacker there".
Late on, Joe Gomez would see red late on for a second bookable offence as the visitors pushed for a victor.
Philippe Coutinho came on as a 76th-minute substitute for his first appearance of the season for Liverpool, following a summer that saw him put in a transfer request after his club rejected three huge offers from Barcelona.
Elsewhere Spartak Moscow and Maribor also played out a draw to leave all Group E sides on one point.
"I've had a chat with Klopp and explained exactly that I wanted to put right my initial mistake".
Klopp insisted that if Liverpool are going to improve their defensive record it needs to be a collective effort.
A minute later and Sadio Mane appeared to be denied a clear penalty when Nico Pareja brought him down just inside the area, but the referee waved play on much to the Reds' striker's bemusement. The Spaniard shone against his former club, laying on the equaliser and proving to be a real threat down the flank.
Liverpool team: Karius, Gomez, Lovren, Matip, Moreno, Henderson, Can, Wijnaldum, Salah, Mane, Firmino.
Liverpool were held to a frustrating 2-2 draw at Anfield by the La Liga side after wasting numerous chances to secure the win, having had 24 shots in total during the match. Shocking start for the hosts.
Liverpool may have peppered his goal with shots, but over-exertion was not required on the Spanish stopper's part.
However, Liverpool levelled things up midway through the first half as Firmino poked home from close range following some great work from Alberto Moreno down the left.
It carries on in a similar vein, the "irresistible" atmosphere providing a pressure for Sevilla's players, only to then be matched by Liverpool's attacking play.
In Liverpool's case, while they created openings to have an attempt at goal against Sevilla, the chances weren't really those opportunities that Mkhitaryan was creating - one-on-one openings, in the box, that are likely to be converted.