London: Liverpool let a 2-0 lead slip as League One Shrewsbury earned a FA Cup fourth round replay at Anfield thanks to a 2-2 draw on Sunday.
Jurgen Klopp showed his focus is very much on a first Premier League title for 30 years as he made 11 changes to the side that won at Wolves on Thursday.
However, unlike against Everton in the third round, the German's gamble did not pay off.
"Well deserved for Shrewsbury, it was the minimum they deserved. Congratulations to them," said Klopp, who was forced to throw on Mohamed Salah and Roberto Firmino in the final stages in the search for a winner.
"We don't have enough time to say all the things which weren't right today."
Despite a calm finish from 18-year-old Curtis Jones to open the scoring on 15 minutes, Liverpool never settled as Shrewsbury missed a host of chances to level before the break.
A freak own goal from Donald Love then doubled the visitors' lead a minute into the second half, but the Shrews did not give up on their shot at shocking the European champions and were given a lifeline when substitute Jason Cummings converted a penalty.
Cummings then sent New Meadow into raptures by slotting low under Adrian 15 minutes from time.
"It was a dream come true against the best team in the world. Going to Anfield is what it's all about," said Cummings.