Liverpool manager Jurgen Klopp praised the "absolutely exceptional" Caoimhin Kelleher after last season's Carabao Cup hero set a club record as he saved three spot-kicks to spare the holders' blushes against League One Derby at Anfield.
After failing to find a breakthrough in 90 minutes, Klopp's side were forced to rely on the goalkeeper whose penalty gave them the trophy at Wembley in February to reach this season's fourth round.
Kelleher repelled penalties from Conor Hourihane, Craig Forsyth and, crucially, Lewis Dobbin, allowing Harvey Elliott to slot home the final kick to send Liverpool through.