Great Britain's Anthony Joshua has said that the atmosphere in the ExCel Centre carried him to his 17-16 victory over "tidy boxer" Erislandy Savon.
The 22-year-old defeated the Cuban in a close super heavyweight contest on Wednesday night.
Joshua admitted that he was pushed to the limit by the Cuban.
"Even though it's your home crowd you get in there and you zone in on something different," Joshua told BBC Sport. "The atmosphere definitely spurred me on, but I was calmer than I thought in there.
"We were both whacking each other with shots, we kept fighting to the last bell and let the judges do the scoring.
"Savon is a tidy boxer, that being my first fight will put me in good stead for the rest. The atmosphere is unbelievable out there and I have to give them great respect."
Joshua will now face China's Zhang Zhilei in the quarter-finals.
