And after the game Klopp was not happy with how either goal was conceded.
Ward spent last term on loan at Huddersfield Town, helping the Terriers gain promotion to the Premier League with two saves in the penalty shoot-out win in the Championship play-off final against Reading at Wembley.
And, as the visitors grew increasingly frustrated with their inability to find the back of the net, Shinji Okazaki fired Leicester in front with a shot that deflected off Andrew Robertson past Danny Ward.
Liverpool face the added pressure of a potentially lucrative run in the Champions League this season, having returned to the competition for the first time in three years following their fourth-placed finish in the Premier League.
The 25-year-old was one of Liverpool's best players in the first-half, posing a constant threat in behind the midfield but keeping himself too far out of reach for their defenders to come and close him down. That's the plan. But he is now the flawless age and still is able to make big steps.
"It's a fantastic opportunity now for Alex". He had an impact when he came on.
"The Leicester team somehow survive in the game as we aren't clinical enough. It's not easy early in the season".
"We sat together with him and the analysts and showed him how we want him to play in this position and that position".
Okazaki put Leicester ahead in the 65th minute following a corner when Vicente Iborra headed the ball down to the Japan global, and his shot took a deflection off Robertson before finding the net. That is how it is but it is really good that he is here.
"Already on the weekend he came on in a hard situation".
In a rare Leicester attack, Demarai Gray skipped around Jon Flanagan, who was making his first Liverpool appearance in 16 months, before normal service resumed.
Meanwhile Klopp is considering a positional move for Joe Gomez alongside the return of Dejan Lovren. He didn't have much match time so far.
Dominic Solanke, Daniel Sturridge, Ben Woodburn and James Milner are others who could all start or are at least expected to make the 18-man squad.
Kieran Trippier did well to bring the ball down on the wing and cross to Alli, who could not miss in the centre of the box.