Joel Matip's unfortunate own goal in the sixth minute of stoppage gave Tottenham all three points as the Reds came seconds away from snatching a point in North London despite going down to nine men. Son Heung-min's opener was brilliantly canceled out by Cody Gakpo just before the interval, but two sending-offs either side of halftime and a devastating last-minute own goal turned the tide in Tottenham's favor.
Curtis Jones received a straight red card for a challenge on Yves Bissouma in the first half, with the English midfielder receiving his marching orders after referee Simon Hooper reviewed the footage on the pitchside monitor.
Diogo Jota, who came on as a second-half substitute for the injured Cody Gakpo, was also sent off for two bookable offenses in quick succession, the first of which was described by Klopp as 'not a yellow' after the game. Speaking to Sky Sports, the Liverpool manager indicated that referring decisions cost his side the game, describing the situation as 'unfair'.
He said: "I was never more proud of the team than today. I never saw a game like this with the most unfair circumstances, crazy decisions. We scored an own goal, that is really tough to take but I am really proud. The first red card, Curtis steps on the ball and goes over. Not a bad tackle.
"It looks different in slow motion. He steps full throttle on the ball and goes over the ball. That is unlucky. [For Diogo Jota] the first yellow was not a yellow. Then he gets a second and to defend with nine players is tricky.
"You want to build something you need players with mentality and I saw them today, they fought. Pretty special tonight."
Jones is set to miss Liverpool's next three domestic games as he received a straight red card as a result of serious foul play, while Jota only faces a one-match ban as he was sent off for two bookable offenses.