Liverpool boss Jurgen Klopp to BBC Sport: "Wonderful highlight in a game with not a lot of highlights and Luis came on and scored a goal. It's really great.
"We should have done better. Credit to Luton. We had our moments but weren't calm enough to finish our situations off.
"When you go 1-0 down and score an equaliser it's a result you rather like. Before the game I wouldn't have thought so. It's a result both teams deserve.
"We played without counter-pressing in the first half which I almost take personally and I told the boys. I can't remember a lot of times we won the ball back and that's not cool.
"It's one of these days. Time goes by and it's not getting easier. It wasn't our best day."