Brendan Rodgers says only poor finishing denied Liverpool maximum points after FC Sion secured a hard-earned point at Anfield.
The hosts scored inside four minutes thanks to Adam Lallana in the Europa League Group B clash, only for the Swiss visitors to level the score as Ebenezer Assifuah coolly poked in the equaliser.
"We're disappointed with the result," Rodgers said. "The story of the game was pretty obvious; we started the game well, got in front, gave away a poor goal and then created chances throughout the game and should have maybe won comfortably.
"But, unfortunately, we ended up drawing the game and we're frustrated in the end."
Liverpool made seven changes from the weekend as he utilised Nathaniel Clyne and Jordon Ibe on the wings.
Alberto Moreno came on at the break, while Danny Ings was replaced by Philippe Coutinho on the hour, while there will be concerns over Kolo Toure who limped off in the closing stages.
Rodgers added: "We had a plan before the game that Nathaniel would play 45 and Alberto would play 45. We asked Danny Ings to play an hour.
"We've obviously got a number of injuries, hence the reason why we needed to protect one or two for this game.
"The only forced injury was obviously Kolo coming off, but with the rest that was the plan before the game."