Newcastle boss Eddie Howe admits there's big regret after defeat at home to Liverpool on Sunday.
Newcastle were a goal and a man up before Darwin Nunez jumped from the bench to score twice late on and earn the win for the Reds.
Howe said: "There was a lot of good. We should have put the game to bed and that is probably the thing we are all kicking ourselves with. We had a lot of chances and goalmouth action. Their goalkeeper made one of the best saves that I have seen live from Almiron and it just wasn't to be for us.
"There were moments there for us. We needed the second goal because Liverpool are dangerous, they are bringing world class players on from the bench. It only takes a chance, even with 10 men, and they are a really good counter-attacking team.
"We were unlucky with their first goal. it hit Sven's [Botman] heel and lands perfectly for Nunez and it is a great finish. Those are the small things that go against you sometimes."
On playing against 10 men, he added: "Sometimes football is like that and you play better against 10 than 11. It wasn't our intention for us to slow down or lose momentum, but Liverpool down to 10 men then become content to let you have the ball in front of them. There's less space, and it was tough for us to break them down.
"Our message at half time was to keep the same intent and to try and score again, to put the game to bed. The moments and chances were there right until the end but we lacked the killer instinct.
"Then to a degree the later the game goes it's on a knife edge, one moment can hurt you and that's what happened."
