Revealing Maresca's frustration to BBC Radio 5 Live, Sancho said: "I thought we played quite well and controlled a lot of the game so it was very frustrating to concede late on. As the manager just said in the dressing room, we just have to kill off the game in the second half.
"I think if we got the second goal, we would have been more relaxed and they would have come out more and that would have created more space in behind for us. That didn't happen unfortunately so we just have to learn from it and move on."