A 15-year-old victim of the Hillsborough disaster appeared to have died as he was caught in crushing on the terraces, a court heard.
Kevin Williams was among the 96 Liverpool supporters who died at the FA Cup semi-final in 1989.
The new inquests was told he had gone to the match with friends and got into the ground more than two hours before kick-off.
They moved into Pen Three behind the goal on the Leppings Lane terrace to get a better view of the pitch.
Kevin’s friend Andrew Duncan said that when the game kicked off they were separated by a crowd surge.
Kenneth Cooper, who was also in Pen Three at the match, said he became aware of Kevin close to him.
He said: “I was aware that there was someone behind me. I believe he was sick, because I had vomit on my top.
“Eventually when the crowd eased back, I grabbed the railing, pulled myself up, because my brother was next to me and I was concerned about him.
“The image that I’ll never forget was of the boy behind me falling backwards. His face was near purple and his eyes were bulging out of his head and there was no life in him. I’m not a medical professional, but I believe he had already died by then.”